Casio Watch MA1108 EB User Manual

MA1108-EB  
5SERꢀS 'UIDE  
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Safety Precautions  
Symbols  
This manual and the watch itself use various symbols that are  
intended to ensure safe operation of the watch, to prevent injury to  
you and others, and to protect against material damage and loss.  
The following explains the meanings of the symbols.  
Example Symbols  
The  
symbol indicates something you need to  
exercise caution about. The symbol to the left indicates  
an electric shock precaution.  
The  
symbol indicates something you must not do.  
The symbol to the left indicates that you should not try  
to disassemble something.  
The  
symbol indicates something you must do. The  
symbol to the left indicates that you must unplug the  
power cord from the power outlet.  
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Disregarding information with this label  
creates the risk of death or serious personal  
injury.  
Danger!  
Warning!  
Caution!  
Disregarding information with this label  
could possibly create the risk of death or  
serious personal injury.  
Disregarding information with this label  
could possibly create the risk of personal  
injury or material loss.  
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Warning!  
Do not use this watch while scuba  
diving (aqualung).  
This watch is not a diving watch.  
Improper use of this watch can lead to  
serious accident.  
Battery  
Whenever removing the button type battery, take care to ensure  
that the battery is not swallowed accidentally.  
Special care is required where young children are present.  
Keep batteries out of the reach of small children. Should a battery  
ever be swallowed accidentally, contact a physician immediately.  
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Caution!  
User Maintenance  
A dirty or rusty case or band can soil the sleeve of your clothing.  
Be sure to keep the case and band clean at all times. Rust tends  
to form easily after the watch is exposed to seawater and then left  
without cleaning.  
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Caution!  
Skin Irritation  
Since the watch and the band come into direct contact with the  
skin, the following conditions may cause irritation of the skin.  
1. When a wearer is allergic to metal or leather  
2. When the watch or band is rusty dirty, sweaty, etc.  
3. When the wearer is in poor physical condition  
Tightening the band too tightly can cause you to sweat and  
make it difficult for air to pass under the band, which can lead to  
skin irritation. Do not over-tighten the band.  
The bacterial and odor resistant band suppresses the formation  
of organisms and bacteria due to sweat, and related odors. It  
does not protect against skin rash.  
Should you ever notice any abnormality, immediately stop using  
the watch and consult a physician.  
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Caution!  
Never try to take the watch apart!  
Never try to take the watch apart. Doing so creates  
the risk of personal injury and malfunction of the watch.  
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Caution!  
Use of the Watch  
To avoid unexpected accidents, always check around you to  
ensure you are in a safe place before looking at the display of the  
watch. Looking at the watch while running or jogging on the open  
road, while riding a bicycle, or operating a motor vehicle can lead  
to accidents. Take care to avoid running into others.  
Take care to avoid breaking your fingernails when fastening and  
unfastening the band. Particular care is required by people with  
long fingernails.  
To avoid unexpected injury or skin irritation due to allergic reaction,  
do not wear the watch while sleeping.  
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Caution!  
Use of the Watch  
When picking up or otherwise coming into contact with a child,  
remove the watch from your wrist to avoid injury to the child or  
causing irritation of the child’s skin.  
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Before using the watch...  
Expose the watch to light.  
Your watch runs on electrical power generated from light, which is  
stored by a rechargeable battery. Long-term storage of the watch  
can cause power to run low, so be sure to expose the watch to light  
before using it for the first time. See page 18 for more information.  
Low Battery Alert  
When battery power is low, the second hand of the watch will jump  
at 2-second intervals in the Timekeeping Mode to let you know that  
charging is required. See page 20 for more information.  
*UMPS EVERY TWO SECONDS  
Power Saving  
Power Saving causes the watch to enter a sleep state automatically,  
which stops movement of the analog hands in order to save power  
whenever the watch is left in the dark.  
The watch will exit the sleep state if you expose it to light or perform  
any button operation.  
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Though the hands are stopped, the watch continues to keep time  
internally.  
Note that the watch also may enter the sleep state if its face is  
blocked from light by your sleeve.  
The watch does not enter the sleep state if it is in the Stopwatch  
Mode or Countdown Timer Mode.  
How the sleep state works  
Sleep Level 1  
Sleep Level 1 is triggered whenever the watch is left in the dark for  
about one hour any time between the hours of 10 p.m. and 6 a.m. At  
this time, watch functions will operate as described below.  
The second hand will stop at its current position.  
The hour hand, 24-hour time hands, minute hand, and date  
indicator will continue to operate normally.  
Auto Receive is performed normally.  
Alarms and the hourly time signal will continue to operate normally.  
At this time, watch functions will operate as described below.  
Sleep Level 2  
Sleep Level 2 is triggered whenever the watch is left in the dark while  
in Sleep Level 1 for six or seven days.  
The hour hand, 24-hour time hand, minute hand, and World Time  
will stop at their current positions.  
World Time timekeeping will stop at the point the current time in  
the Timekeeping Mode reached 0:00.  
Auto Receive will be disabled.  
Alarms and the hourly time signal will be disabled.  
Date display will continue to operate normally.  
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Contents  
Safety Precautions ...............................................2  
Symbols ........................................................................2  
Example Symbols ........................................................2  
Before using the watch......................................10  
Expose the watch to light..........................................10  
Power Saving .............................................................10  
Modes and Indicators ........................................16  
Solar Charging....................................................18  
How a Radio-controlled Watch Works...............24  
What is a radio-controlled watch?............................24  
Calibration Signal.......................................................25  
Reception Ranges......................................................27  
Reception Time...........................................................30  
Positioning the Watch for Best Reception...............30  
Receiving a Calibration Signal..................................31  
Auto receive................................................................32  
Using Manual Receive ...............................................34  
To cancel a manual receive operation............................... 36  
To check the result of the last receive operation ............. 37  
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Calibration Signal Reception Precautions ..............38  
Troubleshooting ........................................................39  
Stopwatch ...........................................................42  
To start or stop an elapsed time operation....................... 42  
To measure elapsed time.................................................... 44  
To measure split times........................................................ 44  
Countdown Timer ...............................................46  
To set the countdown timer start time .............................. 47  
To use the countdown timer............................................... 48  
To stop the time up alert..................................................... 49  
World Time...........................................................50  
To search for a city.............................................................. 51  
Summer Time..............................................................52  
To switch between standard time and  
summer time manually ....................................................... 53  
Home Time/World Time Swapping ............................54  
City Code List.............................................................56  
Alarm ...................................................................58  
To set the alarm time........................................................... 59  
To turn the alarm on or off.................................................. 60  
To stop the time up alert..................................................... 60  
Configuring Home City Settings .......................62  
Configuring Time and Date Settings Manually ....66  
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Auto Hand Home Position Correction ..............73  
To trigger the auto hand home position correction  
operation manually ............................................................. 74  
Manual Home Position Correction....................75  
Specifications .....................................................82  
Operating Precautions.......................................84  
Battery.................................................................89  
User Maintenance ..............................................90  
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Modes and Indicators  
Each press of C cycles through modes in the sequence shown  
below.  
Stopping at a mode for about one second will cause the display to  
change to the data for that mode.  
Operating a button while the hands are moving at high speed may  
cause the hands to stop temporarily.  
4IMEKEEPING -ODE  
#URRENT TIME  
ꢂ)NDICATES HOUR AND  
MINUTE IN ALL MODESꢇ  
2IGHT DIAL HANDS  
ꢂ7ORLD 4IME  
BUTTON  
BUTTON  
,EFT DIAL HAND  
ꢂ$AY OF THE  
WEEKꢆ MODE  
$AY  
3ECOND HAND  
BUTTON  
BUTTON  
"OTTOM DIAL HAND ꢂ#URRENT HOUR IN ꢃꢄꢅHOUR FORMAT  
A button  
Press once to view the last receive result (page 37).  
Any time except while the watch is performing auto hand home  
position correction, holding down C for about two seconds will  
return directly to the Timekeeping Mode.  
See page 24 for more information.  
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The shape and markings of the face depend on the watch  
model.  
3TOPWATCH -ODE  
#OUNTDOWN 4IMER -ODE  
!FTER INDICATING 34ꢆ  
INDICATES ꢈꢉꢃꢁ SECONDS  
FOR STOPWATCH TIMINGꢇ  
#OUNTDOWN 4IMER HOURS  
AND MINUTES  
)NDICATES 42ꢇ  
3TOPWATCH TIME HOURS  
AND MINUTES  
0ꢀꢁꢃ  
0ꢀꢁꢂ  
!LARM -ODE  
7ORLD 4IME -ODE  
)NDICATES 34$ OR $34ꢇ  
7ORLD 4IME  
)NDICATES !,ꢇ  
!LARM TIME  
#ITY CODE  
0ꢀꢄꢆ  
0ꢀꢄꢅ  
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Solar Charging  
Your watch runs on electrical power generated from light, which is  
stored by a rechargeable battery.  
To ensure stable operation, make sure that the watch is exposed to  
light as much as possible.  
Whenever you are not wearing the watch on your wrist, position  
it so the face (solar cell) is pointed in the direction of a source of  
bright light. Leave the watch under fluorescent lighting, near a  
window, etc.  
,IGHT  
3OLAR CELL  
The solar cell is located in the watch’s face. When wearing the  
watch, try to keep your clothing from blocking its face. Charging  
efficiency is reduced significantly even if the face of the watch is  
covered only partially by your sleeve.  
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How the solar cell and battery work  
While the watch is exposed to light...  
,IGHT  
3OLAR CELL  
ꢂ#ONVERTS LIGHT TO POWERꢃ  
%LECTRICAL ENERGY  
#HARGE  
2ECHARGEABLE  
BATTERY  
0OWER SUPPLIED TO WATCH  
While the watch is not exposed to light...  
$ISCHARGE  
2ECHARGEABLE  
BATTERY  
0OWER SUPPLIED TO WATCH  
Your watch continues to operate even when it is not exposed to light.  
Leaving the watch in the dark can run down its battery and cause  
functions to become disabled.  
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Charging Precautions  
Avoid charging the watch in the following locations, and  
anywhere else where the watch may become very hot.  
On the dashboard of an automobile parked in the sun  
Very close to an incandescent light source or other sources  
of heat  
In a location exposed to direct sunlight for long periods  
Depending on the light source you are using, the case of the  
watch may become quite hot when charging. Take care to guard  
against burn injury after charging.  
Low Battery Alert  
When battery power is low, the second hand of the watch will jump  
at 2-second intervals in the Timekeeping Mode to let you know that  
charging is required.  
Important!  
The following functions are disabled when battery power is low.  
Auto receive and manual receive  
Alarm beeper  
Timer countdown (If a countdown is in progress when the  
battery goes low, it continues. However, time up alert does  
not sound.)  
Even if the battery level drops to point that all functions become  
disabled, you still will be able to recharge the battery and use the  
watch again.  
When you recharge the battery after it drops to a level where  
functions become disabled, the hands will move automatically  
back to the current time setting.  
Try to keep the watch exposed to light as much as possible during  
normal use.  
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.ORMAL /PERATION  
7HEN BATTERY RUNS LOW  
-OVES EVERY  
SECOND  
,OW "ATTERY !LERT  
3ECOND HAND JUMPS EVERY  
TWO SECONDSꢃ !T MIDNIGHTꢄ  
THE DATE INDICATOR WILL  
CHANGE TO ꢀ ꢅWHICH IS THE  
HOME POSITION ꢃ  
(OME 0OSITION  
)F POWER DROPS EVEN MOREꢃꢃꢃ  
*UMPS EVERY  
TWO SECONDS  
3TOPPED  
(ANDS STOP AT ꢀꢆ OꢇCLOCKꢃ  
!LL HANDS STOP AT ꢀꢆ OꢇCLOCK  
ꢅHOME POSITIONS ꢃ  
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Recover Mode  
If you use the alarm, calibration signal receive or any other function  
that puts a large load on the battery, the hands will stop temporarily.  
During this time all watch functions will be disabled.  
Normal operation will return after the battery recovers.  
Charging Guide  
The tables in this section provide some guidelines about the  
amount of time required each day to ensure stable operation  
of the watch.  
The values in this section are base on approximately four minutes  
of signal reception and 10 seconds of alarm operation per day.  
Exposure Level (Brightness)  
Approximate Charging Time  
Outdoor Sunlight (50,000 lux)  
8 minutes  
Sunlight through a Window  
(10,000 lux)  
30 minutes  
48 minutes  
8 hours  
Daylight through a Window on an  
Overcast Day (5,000 lux)  
Indoor Fluorescent Lighting  
(500 lux)  
Stable operation is enabled by frequent charging.  
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Approximate Charge Times Required to Advance to a Higher  
Level  
Approximate Charging Time  
Exposure Level  
Until Hand  
Movement Restarts  
(Brightness)  
Until Full Charge  
Outdoor Sunlight  
(50,000 lux)  
2 hours  
6 hours  
23 hours  
Sunlight through a  
Window  
85 hours  
(10,000 lux)  
Daylight through  
a Window on an  
Overcast Day  
(5,000 lux)  
8 hours  
138 hours  
– – –  
Indoor Fluorescent  
Lighting (500 lux)  
92 hours  
Note that the above charging times are for reference only. Actual  
charging time depends on a variety of environmental factors.  
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How a Radio-controlled  
Watch Works  
What is a radio-controlled watch?  
A radio-controlled watch is designed to receive a time calibration  
signal that contains standard time data and adjust its current time  
setting accordingly.  
,ONGꢀWAVE TIME  
4RANSMITTER  
CALIBRATION SIGNAL  
#ESIUM  
ATOMIC CLOCK  
7ATCH  
After the watch receives the Standard Time signal, it performs  
internal calculations to determine the current time. Because of  
this, there may be an error of up to one second in the displayed  
time.  
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Calibration Signal  
The Japanese calibration signal (Call Sign: JJY) is maintained  
by the National Institute of Information and Communications  
Technology (NICT). It is transmitted 24 hours a day from Mt.  
Otakadoya (40 kHz) located in Tamura-gun, Fukushima Prefecture,  
and from Mt. Hagane (60 kHz) located on the border between  
Saga Prefecture and Fukuoka Prefecture.  
The Chinese time calibration signal (BPC) is maintained by  
National Time Service center (NTSC) of China and is transmitted  
from Shangqiu.  
The U.S. calibration signal (Call Sign: WWVB) is transmitted by the  
National Institute of Standards and technology from Fort Collins,  
Colorado.  
The U.K. calibration signal (Call Sign: MSF) is transmitted by the  
National Physical Laboratory (NPL) from Anthorn, which is located  
near Anthorn, Cumbria.  
The German calibration signal (Call Sign: DCF77) is transmitted  
by Physikalisch - Technische Bundesanstalt (PTB) in Mainflingen,  
which is located southeast of Frankfurt.  
Time calibration signal frequencies and transmitter locations are  
subject to change.  
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Note that transmission of the Japanese calibration signal may  
be interrupted occasionally due to maintenance, lightning, etc.  
For more information, visit the website of the Japan Standard  
Time Group of the National Institute of Information and  
Communications Technology (NICT) at the following URL.  
Note that the above URL is subject to change.  
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Reception Ranges  
The table below shows the time calibration signal that the watch  
receives when a particular city code is selected as your Home City.  
For information about the Home City setting, see page 62. See  
page 56 for details on city codes.  
Home City  
Receivable Transmitter  
(Supports signal reception)  
TYO  
Japan (JJY)  
Chinese Time Calibration Signal  
(BPC)  
HKG  
(HNL), (ANC), LAX, DEN,  
CHI, NYC  
United States (WWVB)  
LON, PAR, ATH  
U.K. (MSF) and Germany (DCF77)  
City codes in parentheses indicate areas where reception may be  
possible when conditions are good.  
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4RANSMITTER ,OCATIONS  
*APAN ꢃ**9  
ꢀꢁꢁꢁKM  
-Tꢂ /TAKADOYA  
ꢃꢅꢁK(Z  
ꢆꢁꢁKM  
ꢆꢁꢁKM  
-Tꢂ (AGANE  
ꢃꢄꢁK(Z  
ꢀꢁꢁꢁKM  
5NITED 3TATES ꢃ776"  
ꢀꢁꢁꢁKM  
ꢇꢁꢁꢁKM  
&ORT #OLLINS  
Certain conditions can make reception impossible even when the  
watch is within one of the reception ranges shown above. Signals  
become weaker outside of the smaller circles indicated by dashed  
lines in the nearby maps, so the reception environment has a  
greater effect on signal reception.  
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#HINA ꢃ"0#  
ꢀꢆꢁꢁKM  
ꢆꢁꢁKM  
#HANGCHUN  
"EIJING  
3HANGHAI  
#HENGDU  
(ONG +ONG  
3HANGQIU  
%NGLAND ꢃ-3& ꢈ 'ERMANY ꢃ$#&ꢉꢉ  
ꢀꢆꢁꢁKM  
!NTHORN  
ꢆꢁꢁKM  
-AINFLINGEN  
4HE SIGNAL TRANSMITTED OUT OF !NTHORN  
MAY BE RECEIVABLE WITHIN THIS RANGEꢂ  
The following also can affect signal reception: geographic  
contours, structures, weather, climate, time of day (afternoon,  
evening), noise.  
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Reception Time  
A receive operation can take anywhere from about two to seven  
minutes.  
Under certain conditions, a receive operation can take as long as  
14 minutes.  
Positioning the Watch for Best  
Reception  
Remove the watch from your wrist and place it somewhere so  
its top (12 o’clock side, where the antenna is located) is facing  
approximately in the direction of the signal transmitter. Keep the  
watch away from metal objects.  
2ESIN BAND  
-ETAL BAND  
Orienting the watch so it is sideways to the transmitter makes it  
more difficult for it to receive the signal.  
Do not move the watch while it is receiving the calibration signal.  
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Important!  
Reception is difficult and may even be impossible in the locations  
described below. Avoid such locations when performing signal  
reception.  
You should think of your watch as operating like a radio or TV  
when it is receiving the calibration signal.  
Among or near  
buildings  
Near high-voltage  
lines  
Inside an automobile,  
train, plane, or other  
vehicle  
Next to a TV, speaker, At a construction  
Near mountains  
fax, computer,  
cellphone, or other  
site, airport, or  
other location  
household appliances where there is radio  
or office equipment interference  
If you are experiencing problems with reception, move away  
from the types of locations described above to a location with  
better reception, and try again.  
Receiving a Calibration Signal  
There are two methods you can use in order to receive the time  
calibration signal.  
Auto Receive: Six times a day (five times for the China signal)  
Manual Receive: Hold down A in the Timekeeping Mode.  
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Auto receive  
You will need to perform the operations described below before  
you can use Auto Receive.  
In the Timekeeping Mode, select a Home City that supports  
reception of your local time calibration signal. See pages 27 to  
29, and page 62 for more information.  
Put the watch into the Timekeeping Mode or World Time Mode.  
See “Modes and Indicators” on page 16.  
During the Auto Receive times, position the watch correctly for  
best reception. See “Auto Receive Start Times” (below) and  
“Positioning the Watch for Best Reception” on page 30.  
Auto Receive Start Times  
Home City  
1
2
TYO  
HKG  
Standard Time  
Standard Time  
Midnight  
1:00 a.m.  
1:00 a.m.  
2:00 a.m.  
HNL, ANC, LAX,  
DEN, CHI, NYC  
Standard Time  
Summer time  
Midnight  
1:00 a.m.  
Standard Time  
Summer time  
Standard Time  
Summer time  
Standard Time  
Summer time  
1:00 a.m.  
2:00 a.m.  
2:00 a.m.  
3:00 a.m.  
3:00 a.m.  
4:00 a.m.  
2:00 a.m.  
3:00 a.m.  
3:00 a.m.  
4:00 a.m.  
4:00 a.m.  
5:00 a.m.  
LON  
PAR  
ATH  
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Calibration signal reception will start automatically whenever the  
current time in the Timekeeping mode (page 16) reaches one  
of the Auto Receive Start Times shown below. Auto receive can  
be performed up to six times a day, but any time a signal receive  
operation is successful, no more auto receive operations are  
performed that day. Note that the Auto Receive Start Times differ  
according to the current Home City setting and the summer time  
setting.  
Summer time, or Daylight Saving Time (DST) as it is called in  
some countries, calls for setting clocks ahead one hour from  
standard time during the summer season.  
Note that the start and end of daylight time, and whether it is used  
at all depends on each country and geographic area.  
Auto Receive Start Times  
3
4
5
6
2:00 a.m.  
3:00 a.m.  
3:00 a.m.  
4:00 a.m.  
4:00 a.m.  
5:00 a.m.  
5:00 a.m.  
2:00 a.m.  
3:00 a.m.  
4:00 a.m.  
5:00 a.m.  
3:00 a.m.  
4:00 a.m.  
4:00 a.m.  
5:00 a.m.  
5:00 a.m.  
Midnight*  
4:00 a.m.  
5:00 a.m.  
5:00 a.m.  
Midnight*  
Midnight*  
1:00 a.m.*  
5:00 a.m.  
Midnight*  
Midnight*  
1:00 a.m.*  
1:00 a.m.*  
2:00 a.m.*  
Midnight*  
1:00 a.m.*  
1:00 a.m.*  
2:00 a.m.*  
2:00 a.m.*  
3:00 a.m.*  
* Following day  
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When reception is successful  
After a receive operation is complete, the watch will return to regular  
timekeeping, which will show the newly adjusted time.  
When reception fails  
This will cause the watch to return to regular timekeeping without  
adjusting the time setting.  
Using Manual Receive  
Hold down A for about two seconds in the Timekeeping Mode.  
You will need to perform the operations described below before  
you can perform Manual Receive.  
In the Timekeeping Mode, select a Home City that supports  
reception of your local time calibration signal. See pages 27 to 29,  
and page 62 for more information.  
Put the watch into the Timekeeping Mode. See “Modes and  
Indicators” on page 16.  
Position the watch correctly as shown under “Positioning the Watch  
for Best Reception” on page 30.  
In the Timekeeping Mode,  
hold down A for about two  
seconds.  
The second hand will indicate the result  
of the reception, and then move to  
READY (R for some models).  
The hour and minute hands will continue  
to operate normally during signal  
reception.  
2%!$9 ꢂOR 2  
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While reception is in progress...  
The second hand will indicate the current  
reception status.  
READY (or R): Unstable reception  
WORK (or W): Stable reception  
Keep the watch in a location where  
reception is stable while a receive  
operation is in progress.  
Do not move the watch while signal  
reception is in progress (second hand  
at “WORK”).  
7/2+ ꢂOR 7  
Even under optimum reception  
conditions, it can take about 10 seconds  
for reception to stabilize.  
Use the second hand position to check the status of a receive  
operation and to determine the best location for signal reception.  
Note that weather, the time of day, surroundings, and other factors  
all can affect reception.  
The hour and minute hands will continue to operate normally  
during signal reception.  
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When reception is complete...  
When signal reception is successful,  
the second hand will move to YES (Y  
for some models) and the current time  
setting will be adjusted according to the  
received information. Next, the watch will  
return to regular timekeeping.  
9%3 ꢂOR 9  
If signal reception is not successful,  
the second hand will move to NO (N  
for some models). Then after about five  
seconds the watch will return to regular  
timekeeping.  
./ ꢂOR .  
To cancel a manual receive operation  
Press any button.  
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To check the result of the last receive  
operation  
In the Timekeeping Mode, press A.  
The second hand will move to YES (or Y) if the last receive  
operation was successful or to NO (or N) if the last receive  
operation was unsuccessful.  
Press A once to return to regular timekeeping.  
If you do not perform any operation for about five seconds, the  
watch will return automatically to regular timekeeping.  
9%3 ꢂOR 9 ꢃ 3UCCESSFUL  
./ ꢂOR . ꢃ 5NSUCCESSFUL  
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Calibration Signal Reception  
Precautions  
Auto receive can be performed while the watch is in the  
Timekeeping Mode or World Time Mode only.  
The receive operation is disabled under any of the following  
conditions.  
When a timer operation is in progress  
When the battery is dead  
When the watch is in the recover mode  
Pressing any button while auto receive is in progress will cause  
the watch to exit the receive operation.  
Make sure you are within the range of a calibration signal  
transmitter before performing the receive operation. Remember  
that geographic contours, nearby buildings, the season, or the time  
of day can make reception impossible even when you are within  
range of the transmitter.  
Proper reception may be impossible if there is something blocking  
the signal. If reception is unsuccessful, try again.  
You will need to adjust the current time manually when using this  
watch in an area that is not covered by receivable time calibration  
signal.  
When the watch is unable to adjust its time using the calibration  
signal for some reason, timekeeping accuracy is as noted in the  
specifications at the back of this manual.  
Strong electrostatic charge can cause timekeeping error.  
Receive is cancelled if an alarm operation starts while it is being  
performed.  
The watch’s calendar shows dates up to the year 2099. Attempting  
a receive operation after that causes an error.  
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Troubleshooting  
1
The watch cannot receive the time calibration signal.  
Is there something in the immediate area that may be interfering  
with reception?  
Even if you are within the reception range of a transmitter,  
electrical noise or objects between you and the transmitter can  
interfere with reception. Avoid such areas during signal reception.  
See page 31 for more information.  
Are you within the reception range of a transmitter?  
See page 27 for information about areas where the watch can  
receive the signal.  
Are your Home City settings configured correctly?  
Select the correct Home City code using the procedure under  
“Configuring Home City Settings” on page 62.  
Is the signal being transmitted?  
Transmission of time calibration signals may be interrupted  
occasionally due to maintenance, lightning, etc.  
Is a timer operation in progress?  
Auto receive cannot be performed while a timer operation is in  
progress.  
2
Time calibration signal reception is successful, but the  
hourly time signal and current time are slightly off.  
After the watch receives the time calibration signal, it performs  
an internal decoding process before updating its time setting.  
Because of this, the time setting may be off slightly (within one  
second).  
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3
Time calibration signal reception is successful, but the  
current time setting is wrong.  
Are your Home City settings configured correctly?  
Select the correct Home City code using the procedure under  
“Configuring Home City Settings” on page 62.  
Are the home positions of the hands off?  
Strong magnetism or impact can cause the hands and/or date of  
the watch to be off. Normally the watch adjusts the hand and date  
positions automatically once every hour.You also can perform  
manual hand adjustment, when required. See “Auto Hand Home  
Position Correction” on page 73 and “Manual Home Position  
Correction” on page 75 for more information.  
If you cannot receive the calibration signal or if the time setting is  
incorrect after signal reception, check the setup of the watch.  
The following are the watch’s factory default settings, which are  
configured automatically whenever you have the battery of the  
watch replaced.  
Home City  
TYO  
STD  
Tokyo  
Summer time  
Standard Time  
For more information about summer time, see page 52.  
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Stopwatch  
The stopwatch measures elapsed time in units of 1/20 second  
up to 23 hours, 59 minutes, 59.95 seconds (24 hours). When  
the maximum limit is reached, the elapsed time returns to zero  
automatically and timing continues from there.  
To start or stop an elapsed time  
operation  
In the Stopwatch Mode, press B to start and stop the  
stopwatch.  
Press B to start and stop the stopwatch.  
3TOPWATCH SECOND HAND  
v 3TART  
v 3TOP  
3TOPWATCH  
ꢂꢃꢄꢁꢅSECOND  
v 3PLIT  
v 2ESET  
3TOPWATCH TIME HOURS AND MINUTES  
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Use the C button to enter the Stopwatch Mode as shown  
under “Modes and Indicators” on page 16.  
Pressing D during an elapsed time operation stops the  
hands at the split time. Elapsed time measurement continues  
internally. After about five seconds, the hands will return to  
normal elapsed time indication.  
1/20-second timing is performed only for the first 30 seconds  
after you start or restart an elapsed time operation. The  
left dial (1/20-second) hand also jumps to the 1/20-second  
position when you stop an elapsed time operation.  
Pressing D while the stopwatch is stopped will reset  
stopwatch to zero.  
The following operations are not possible while the watch’s  
hands are moving during a stopwatch elapsed time operation.  
Split, reset  
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To measure elapsed time  
3TART  
3TOP  
2ESET  
To measure split times  
.ORMAL  
MEASUREMENT  
RESUMED  
3TART  
3PLIT  
3TOP  
2ESET  
AFTER ꢀ SECONDSꢁ  
Pressing D again while a split time is indicated will cause the  
hands to jump to a new (current) split time.  
Pressing B while a split time is indicated will stop the elapsed  
time operation, causing the hands to jump to the stop time.  
Cumulative Elapsed Time Measurement  
Pressing B to restart the stopwatch without resetting it will resume  
the elapsed time operation from where it was last stopped.  
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Countdown Timer  
The Countdown Timer lets you set a start time of up to 24 hours  
in 1-minute steps, and then countdown from there in one-second  
steps.  
The watch beeps for 10 seconds when the end of the countdown  
is reached.  
When the end of the countdown is reached, the watch switches  
automatically to measurement of the time elapsed since the end of  
the countdown (in units of one second).  
When the maximum limit (24 hours) of the elapsed time  
measurement operation is reached, the elapsed time operation  
continues from zero.  
#OUNTDOWN TIMER SECOND HAND  
v 3TART  
v 3TOP  
v 4IMER START TIME  
nꢂ MINUTE  
)NDICATES TO 42ꢃ  
v 4IMER START TIME  
ꢄꢂ MINUTE  
v 2ESET  
#OUNTDOWN 4IMER HOURS AND MINUTES  
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Use the C button to enter the Countdown Timer Mode as  
shown under “Modes and Indicators” on page 16.  
To set the countdown timer start time  
1.  
With the countdown timer stopped in the Countdown  
Timer Mode, press D.  
2.  
Use D (+) and A (–) to change the countdown timer  
start time.  
Holding down either button will cause the hands to move at  
high speed. Once started, high-speed hand movement will  
continue even if you release the button. To stop high-speed  
hand movement, press any button.  
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To use the countdown timer  
In the Countdown Timer Mode, press B to start and  
stop the countdown timer.  
The right dial hands count down the time in one-second steps.  
The right dial hands move counterclockwise during countdown  
timer operation.  
#OUNTDOWN TIMER SECOND HAND  
v 3TART  
v 3TOP  
v 2ESET  
#OUNTDOWN 4IMER HOURS AND MINUTES  
3TART  
3TOP  
2ESET  
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Pressing D while the countdown timer is stopped resets the  
displayed time to the start time.  
Pressing B while the countdown timer is stopped will restart  
the countdown.  
When the end of the countdown is reached, the watch will  
beep and start an elapsed time operation. The right dial hands  
move clockwise during the elapsed time operation. Pressing  
B will stop the elapsed time operation. Pressing D while an  
elapsed time operation is stopped will reset the countdown  
timer to its start time.  
The countdown timer cannot be reset to its starting time while  
the right dial hands are moving during a countdown timer  
operation.  
To stop the time up alert  
Pressing any button while the alert is sounding will stop it.  
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World Time  
World time lets you display the current time in any one of 29 cities  
(29 time zones) around the world.  
7ORLD 4IME  
#ITY CODE  
v
34$ꢄ$34 SWITCHING  
ꢂ(OLD DOWN  
ꢅ SECONDSꢃ  
v
v
(OME 4IMEꢄ7ORLD 4IME  
SWAPPING  
ꢂ(OLD DOWN ꢀ SECONDSꢃ  
3CROLLS CITIESꢃ  
)NDICATES 34$ ꢂSTANDARD TIME  
$34 ꢂSUMMER TIME SETTINGꢃ  
If the current time is not correct, check your current Home City  
settings and make adjustments as required (page 62).  
The following operations are not possible while the watch’s hands  
are moving to the current time for a newly selected city code.  
A Button: STD/DST switching  
B Button: Home Time/World Time swapping  
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Use the C button to enter the World Time Mode as shown  
under “Buttons and Indicators” on page 16.  
To search for a city  
In the World Time Mode, press  
D to move the second hand  
(which is pointing at the  
currently selected city code)  
clockwise.  
ꢂCLOCKWISE  
About one second after you release  
D, the hands of the watch will move  
to the current time in the zone of the  
city code indicated by the second  
hand.  
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Summer Time  
Summer time, or Daylight Saving Time (DST) as it is known in some  
countries, calls for setting clocks ahead one hour from standard time  
(STD) during the summer season.  
Note that the start and end of daylight time, and whether it is used  
at all depends on each country and geographic area.  
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To switch between standard time and  
summer time manually  
In the World Time Mode, press D to move the second  
hand clockwise to the city code of the city whose STD/DST  
setting you want to change.  
Hold down A for about two seconds to toggle the currently  
selected city between STD (standard time) and DST (summer  
time).  
You can specify STD or DST individually for each World Time city.  
Note, however, that you cannot change the setting of the UTC  
zone.  
ꢂꢃ SECONDS  
Standard time  
The left dial hand points to STD (standard time).  
Summer time  
The left dial hand points to DST (summer time). Summer time is  
one hour ahead of standard time.  
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Home Time/World Time Swapping  
Use the procedure below to swap the city you currently have  
selected in the World Time Mode with your Home city.  
Example:To swap your Home City Tokyo (TYO) with the World  
Time City NewYork (NYC)  
Home City  
World Time City  
New York (NYC)  
Tokyo (TYO)  
Before swapping  
After swapping  
Tokyo (TYO)  
New York (NYC)  
.9# SELECTED  
1.  
In the World Time Mode,  
press D to move the  
second hand clockwise to  
the city code of the city you  
want to use as your new  
Home City.  
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2.  
Hold down B for about  
three seconds until the  
watch beeps.  
This will make the World Time  
City you selected in step 1 (New  
York) your new Home City.  
Your previous Home City (Tokyo)  
will be your new World Time City.  
3ECOND HAND  
MOVES TO 49/ꢂ  
Important!  
If you are using the watch in Japan, be sure to select TYO (Tokyo) as  
your Home City. Selecting another city code will make it impossible  
to receive the time calibration signal, which will cause the watch’s  
time setting to be off.  
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City Code List  
City  
Code Offset  
UTC  
City  
Code Offset  
UTC  
City Name  
City Name  
Coordinated  
Universal Time  
ADL  
SYD  
NOU  
WLG  
PPG  
HNL  
ANC  
LAX  
DEN  
CHI  
+9.5 Adelaide  
+10 Sydney  
UTC  
0
LON  
PAR  
ATH  
JED  
THR  
DXB  
KBL  
KHI  
0
London  
Paris  
+11 Noumea  
+12 Wellington  
–11 Pago Pago  
–10 Honolulu  
+1  
+2  
+3  
Athens  
Jeddah  
+3.5 Tehran  
+4 Dubai  
+4.5 Kabul  
+5 Karachi  
+5.5 Delhi  
+6 Dhaka  
+6.5 Yangon  
–9  
–8  
–7  
–6  
–5  
–4  
–3  
Anchorage  
Los Angeles  
Denver  
Chicago  
DEL  
DAC  
RGN  
BKK  
HKG  
TYO  
NYC  
SCL  
RIO  
New York  
Santiago  
Rio de Janeiro  
+7  
+8  
+9  
Bangkok  
Hong Kong  
Tokyo  
Fernando de  
Noronha  
FEN  
RAI  
–2  
–1  
Praia  
The contents of the above table are current as of March 2008.  
Time differentials in the above table are in accordance with  
Coordinated Universal Time (UTC).  
The rules governing UTC offsets and summer time are determined  
by each individual country.  
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Alarm  
The watch will beep for 10 seconds when the Timekeeping Mode  
time reaches the currently set alarm time.  
The alarm will sound when the current time in the Timekeeping  
Mode matches the alarm time.  
If you do not perform any operation for about two or three minutes  
in the Alarm Mode, the watch will return automatically to the  
Timekeeping Mode.  
v 4OGGLES ALARM  
ON OR OFFꢂ  
v !LARM TIME nꢄ MINUTE  
!LARM TIME  
v !LARM TIME ꢅꢄ MINUTE  
!LARM /.ꢃ/&&  
h!,v INDICATEDꢂ  
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Use the C button to enter the Alarm Mode as shown under  
“Modes and Indicators” on page 16.  
To set the alarm time  
!LARM TIME  
In the Alarm Mode, use D (+) and  
B (–) to change the alarm setting.  
ꢂn  
Holding down either button will cause  
the hands to move at high speed. Once  
started, high-speed hand movement will  
continue even if you release the button.  
To stop high-speed hand movement,  
press any button.  
ꢂꢃ  
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To turn the alarm on or off  
In the Alarm Mode, press A to toggle the alarm on and off.  
/.  
/&&  
To stop the time up alert  
Pressing any button while the alert is sounding will stop it.  
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Configuring Home  
City Settings  
Use the procedure in this section to configure your Home City (the  
place where you normally use the watch) and standard/summer time  
settings.  
Use the Timekeeping Mode to configure Home City and standard/  
summer time settings.  
1.  
In the Timekeeping Mode,  
keep A depressed (for  
about five seconds) as the  
second hand goes through  
the sequence described  
below.  
Moves to the city code of the  
current Home City setting.  
3ECOND HAND  
Moves to the last signal reception  
result (“Y” or “N”), then to “Ready”  
(or “R” for some models), and  
then back to the city code of the currently selected Home  
City.  
The watch will exit the setting screen automatically if you do  
not perform any operation for about two or three minutes.  
Any changes you have made to settings up to that point will  
be saved.  
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Each press of C cycles through available settings in the  
sequence shown below.  
v (OME #ITY  
(OUR AND MINUTE  
v 34$ꢀ$34 SETTING  
9EAR  
$AY  
-ONTH  
For information about configure time and date settings, see  
“Configuring Time and Date Settings Manually” (page 66).  
2.  
Press D to move the  
second hand clockwise  
until it points at the city  
you want to select as your  
Home City.  
ꢂCLOCKWISE  
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3.  
Press B to toggle between  
standard time (STD) and  
summer time (DST).  
You will not be able to change the  
STD/DST setting while the watch’s  
hands are moving to the current time  
for a newly selected city code. Wait  
until the hands stop moving.  
Standard time  
The left dial hand points to STD (standard time).  
Summer time  
The left dial hand points to DST (summer time).  
Summer time is one hour ahead of standard time.  
The watch will adjust the STD/DST setting automatically when it  
receives a time calibration signal while any one of the following city  
codes is selected as the Home City.  
LON, PAR, ATH, TYO, ANC, LAX, DEN, CHI, NYC  
The watch will not adjust the DST setting automatically while either  
of city codes shown below is selected as the Home City. In this  
case, you will need to change between standard time and summer  
time manually.  
HKG, HNL  
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If you want to proceed with adjusting the current time and date  
setting, continue from step 2 under “Configuring Time and Date  
Settings Manually” (page 67). If you do go the date and time  
adjustment procedure, note that you will not be able to return  
directly to this Home City and summer time setting procedure. To  
return to this procedure, you will need to press A to exit the time  
and date setting procedure, and then perform this procedure from  
step 1, above.  
4.  
When everything is the way you want, press A.  
This will apply your settings and return to regular  
timekeeping. The second hand will move to and start  
timekeeping from the appropriate seconds count in  
accordance with the watch’s internal timekeeping.  
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Configuring Time and  
Date Settings Manually  
You can use the following procedures to adjust the time and date  
settings when the watch is unable to receive a time calibration signal  
for some reason.  
1.  
In the Timekeeping Mode,  
keep A depressed (for about  
five seconds) as the second  
hand goes through the  
sequence described below.  
Moves to the city code of the current  
Home City setting.  
Moves to the last signal reception  
result (“Y” or “N”), then to “Ready”  
3ECOND HAND  
(or “R” for some models), and then  
back to the city code of the currently  
selected Home City.  
The watch will exit the setting screen automatically if you do  
not perform any operation for about two or three minutes.  
Any changes you have made to settings up to that point will  
be saved.  
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Each press of C cycles through available settings in the  
sequence shown below. For information about the STD (standard  
time)/DST (summer time) setting, see “Configuring Home City  
Settings” (page 62).  
v (OME #ITY  
v 34$ꢀ$34 SETTING  
(OUR AND MINUTE  
9EAR  
$AY  
-ONTH  
2.  
Press C.  
The second hand will move to  
12 o’clock, and the left dial hand will  
move to “0” (“60” for some models).  
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ꢂn  
ꢂꢃ  
3.  
Use D (+) and B (–) to  
change the time setting in  
one-minute increments.  
Holding down either button will  
cause the hands to move at high  
speed. Once started, high-speed  
hand movement will continue even  
if you release the button. To stop  
high-speed hand movement, press  
any button.  
Check the hour (24-hour) to make sure that the time is set  
properly (1:00 a.m. = 1 o’clock, 1:00 p.m. = 13 o’clock).  
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9EAR TENS DIGIT  
4.  
5.  
Press C to advance to the  
year setting.  
The year setting consists of a tens  
digit and a ones digit setting.  
9EAR ONES DIGIT  
Use D (ones digit) and B  
(tens digit) to change the  
year setting.  
D: Increases the ones digit by 1.  
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B: Increases the tens digit by 10.  
ꢀꢀ  
ꢆꢀ  
ꢅꢀ  
ꢇꢀ  
ꢈꢀ  
ꢄꢀ  
ꢃꢀ  
ꢉꢀ  
ꢂꢀ  
ꢁꢀ  
6.  
Press C to advance to the  
month setting.  
-OVES TO THE CURRENT  
MONTH SETTINGꢂ  
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7.  
Press D to move the second hand clockwise to the  
next month.  
$EC  
.OV  
*AN  
/CT  
&EB  
3EP  
-AR  
!UG  
!PR  
*UL  
-AY  
*UN  
8.  
Press C to advance to the  
day setting.  
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ꢂn  
ꢂꢃ  
9.  
Use D (+) and B (–) to  
change the day setting in  
one-day increments.  
10.  
When everything is the way  
you want, press A.  
This will reset the seconds count  
to zero and return to regular  
timekeeping.  
For best timekeeping accuracy,  
press A on a time signal from the  
TV or radio.  
The day of the week is calculated automatically.  
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Auto Hand Home  
Position Correction  
Strong magnetism or impact can cause the hands and/or date of the  
watch to be off, even if the watch is able to perform the signal receive  
operation. Auto hand home position correction corrects the hand  
position automatically.  
Auto correction is performed in the Timekeeping Mode only.  
However, auto correction is never performed while a countdown  
timer operation is in progress.  
The auto correction operation corrects the positions of the second,  
minute, and hour hands. Home position correction of the dial  
hands and date can be performed manually, using the procedure  
under “Manual Home Position Correction” (page 75).  
Each hour, the watch performs automatic correction of the hand  
positions from –55 minutes to +5 minutes.  
You also can trigger the auto hand home position correction  
operation manually, if you want. See “To trigger the auto hand  
home position correction operation manually” (page 74) for more  
information.  
The auto hand home position correction operation can take up to  
three and a half minutes to complete.  
If hand positions are off by one hour or more, correct them using  
the procedure under “To trigger the auto hand home position  
correction operation manually” (page 74) or “Manual Home  
Position Correction” (page 75).  
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To trigger the auto hand home position  
correction operation manually  
Perform the following procedure when the time setting is off.  
In the Timekeeping Mode, hold  
down D for about six seconds  
until the second hand completes  
one full revolution.  
Though the watch will beep and second  
hand will stop momentarily about three  
seconds after you hold down D, do  
not release the button yet. Wait until the  
second hand completes a full revolution  
before you release D.  
The watch will perform hand home position correction  
automatically, which takes up to three and a half minutes to  
complete. Do not operate the watch during that time. The watch  
will return to regular timekeeping after auto hand home time  
correction is complete.  
To interrupt an ongoing correction operation and return to regular  
timekeeping, press D again.  
If you release D when the watch beeps and the second hand  
momentarily stops after three seconds, the watch will go into  
manual home position correction, which is described under  
“Manual Home Position Correction” (page 75). If this happens,  
press A to return to regular timekeeping and then perform the  
above operation again.  
The manually triggered auto home position correction operation  
performs the following two steps.  
1.The hands will move automatically in order to determine their  
home positions.  
2.After auto home position correction is complete (about three  
and a half minutes), the watch will return to regular timekeeping  
automatically.  
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Manual Home  
Position Correction  
Strong magnetism or impact can cause the hands and/or date of the  
watch to be off, even if the watch is able to perform the signal receive  
operation. If this happens, perform the following home position  
correction procedure.  
Hand home position correction is not required if the time and date  
settings are correct.  
You also can use auto hand home position correction (page 73) to  
correct the home positions of the second, minute, and hour hands.  
3ECOND HAND  
1.  
In the Timekeeping Mode,  
hold down D for about  
three seconds until the  
watch beeps and the second  
hand stops. Release D at  
this time.  
If you do not perform any operation  
for about two or three minutes, the  
watch will return automatically to regular timekeeping. Any  
settings you have configured up to that point will be saved.  
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Each press of C cycles through available settings in the  
sequence shown below.  
(OUR AND  
MINUTE HANDS  
2IGHT DIAL HANDS  
ꢀ7ORLD 4IME  
3ECOND HAND  
$AY  
,EFT DIAL HAND  
ꢀDAY OF THE WEEK  
2.  
Check the second hand position.  
Home Position  
Second Hand: 12 o’clock  
If the second is at its proper home position, advance to step 4.  
The watch will return to regular timekeeping automatically if you  
do not perform any operation for about two or three minutes. Any  
changes you have configured to settings up to that point will be  
saved.  
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If the second hand home position is off  
3.  
Use D to adjust the second hand position.  
The second hand moves clockwise only. Keep pressing  
the button until the second hand is at its proper home  
position.  
Holding D will cause the hand to start to move at high  
speed. To stop high-speed hand movement, press any  
button.  
-INUTE  
HAND  
(OUR  
HAND  
4.  
Press C to change to hour  
and minute hand correction.  
This will cause the hour and minute  
hands (and the bottom dial hand) to  
move to their home positions.  
Home Positions  
Hour hand: 12 o’clock  
Minute hand: 12 o’clock  
Bottom dial hand: 12 o’clock  
"OTTOM DIAL HAND  
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If the hour, minute, and bottom dial hands all are at their  
proper home positions, advance to step 6.  
If the hour and minute hands are off  
5.  
Use D (+) and B (–) to adjust the hands.  
Holding down either button will cause the hands to  
move at high speed. Once started, high-speed hand  
movement will continue even if you release the button.  
To stop high-speed hand movement, press any button.  
The position of the bottom dial hand is synchronized  
automatically with the hour and minute hands.  
-INUTE HAND  
6.  
Press C to advance to right  
dial correction.  
This will cause the hour and minute  
hands of the right dial to move to  
their home positions.  
Home Positions  
Hour hand: 12 o’clock  
Minute hand: 12 o’clock  
(OUR HAND  
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If the right dial hands are at their proper home positions,  
advance to step 8.  
If the right dial hands are off  
7.  
Use D (+) and B (–) to adjust the right dial  
hands.  
Holding down either button will cause the hands to  
move at high speed. Once started, high-speed hand  
movement will continue even if you release the button.  
To stop high-speed hand movement, press any button.  
,EFT DIAL HAND  
8.  
Press C to change to left  
dial correction.  
This causes the left dial hand to  
move to its home position.  
Home Position  
Left dial hand: 12 o’clock  
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If left dial hand is at its proper home position, advance to  
step 10.  
If the left dial hand is off  
9.  
Use D (+) and B (–) to adjust the left dial hand.  
Holding down either button will cause the hand to  
move at high speed. Once started, high-speed hand  
movement will continue even if you release the button.  
To stop high-speed hand movement, press any button.  
10.  
Press C to change to day  
correction.  
This causes the day to move to its  
home position.  
Home Position  
Day: 1  
$AY  
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If the day is at its proper home position, advance to step 12.  
If the day is off  
11.  
Use D (+) and B (–) to adjust the day.  
Holding down either button will cause the day to scroll  
at high speed. Once started, high-speed day scrolling  
will continue even if you release the button. To stop high-  
speed hand movement, press any button.  
12.  
Press A to exit home  
position correction  
and return to regular  
timekeeping.  
If you press C instead of A, the  
watch will return to step 1 (second  
hand home position adjustment) of this procedure.  
Check to make sure that the time, day, and day of the week are  
being indicated correctly.  
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Specifications  
Quartz Oscillation Frequency: 32,768Hz  
Accuracy: Within an average of 15 seconds per month when time  
calibration signal reception is not performed  
Basic Functions: Hour, minute (moves every 10 seconds), second;  
24-hour timekeeping; date; day of the week  
Radio-controlled Watch Functions: Auto receive; manual receive  
Last reception result  
Auto standard time/summer time switching  
Auto transmitter selection (for JJY, MSF/DCF77)  
Transmitters  
Call Signs: JJY (40kHz/60kHz), BPC (68.5kHz),  
WWVB (60kHz), MSF (60kHz), DCF77  
(77.5kHz)  
Stopwatch: Measuring unit: 1/20 second  
Measuring Capacity: 23:59'59.95" (24 hours)  
Measurement Functions: Elapsed time, split times,  
cumulative time  
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Countdown Timer: Setting Unit: 1 minute  
Measurement Range: 24 hours  
Countdown Unit: 1 second  
Beeper: 10 seconds  
Auto switching to elapsed time measurement  
(1-second units) when the end of a countdown  
timer operation is reached  
World Time: Current time in 29 cities (29 time zones) around the  
globe, summer time, Home City  
Alarm: Setting Units: Hour, minute  
Beeper: 10 seconds  
Other: Auto hand home position adjustment; auto return to regular  
timekeeping; Power Saving  
Main Element: Tuning fork type high-performance quartz oscillator;  
one-chip CMOS-LSI  
Battery: Rechargeable battery  
Battery Operating Time: 5 months  
(no exposure to light; 10 seconds alarm  
beeper operation and one signal reception  
of approximately 4 minutes per day)  
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Operating Precautions  
Water Resistance  
The following applies to watches with WATER RESIST or WATER  
RESISTANT marked on the back cover.  
Enhanced Water Resistance Under  
Daily Use  
Water  
resistance  
Under  
5
10  
20  
Daily Use  
Atmospheres Atmospheres Atmospheres  
On watch front or  
on back cover  
No  
Marking  
5BAR  
Yes  
10BAR  
Yes  
20BAR  
Yes  
BAR mark  
Hand washing,  
rain  
Yes  
No  
Water-related  
work, swimming  
Example of  
Daily Use  
Yes  
Yes  
Yes  
Windsurfing  
Skin diving  
No  
No  
No  
No  
Yes  
Yes  
Yes  
Yes  
Do not use this watch for scuba diving or other types of diving that  
requires air tanks.  
Watches that do not have WATER RESIST or WATER RESISTANT  
marked on the back cover are not protected against the effects of  
sweat. Avoid using such a watch under conditions where it will be  
exposed to large amounts of sweat or moisture, or to direct splashing  
with water.  
Even if a watch is water-resistant, do not operate its buttons or crown  
while the watch is submersed in water or wet.  
Even if a watch is water-resistant, avoid wearing it in the bath or in  
areas where detergents (soap, shampoo, etc.) are being used. Such  
conditions can reduce water resistance.  
After submersion in seawater, use plain water to rinse all salt and  
dirt from the watch.  
In order to maintain water resistance, have the gaskets of your watch  
replace periodically (about once every two or three years).  
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A trained technician will know how to check your watch for proper  
water resistance whenever you have its battery replaced. Battery  
replacement requires the use of special tools.Always request battery  
replacement from your original retailer or from an authorized CASIO  
service center.  
Some water-resistant watches come with fashionable leather bands.  
Avoid swimming, washing, or any other activity that causes direct  
exposure of a leather band to water.  
The inside surface of the watch glass may fog when the watch is  
exposed to a sudden drop in temperature. No problem is indicated  
if the fogging clears up relatively quickly. If the fogging does not  
clear or if water has gotten into the watch, take the watch in for  
repair immediately.  
Continued use of the watch with water inside can result in damage to  
electronic and mechanical components, the face of the watch, etc.  
Band  
Tightening the band too tightly can cause you to sweat and make it  
difficult for air to pass under the band, which can lead to skin irritation.  
Do not fasten the band too tightly. There should be enough room  
between the band and your wrist so you can insert your finger.  
Deterioration, rust, or corrosion of the band can cause it to break,  
which may result in the watch falling off your wrist and becoming  
lost. Always take good care of you band and keep it clean.  
Should you notice any loss of flexibility, breakage, discoloration,  
looseness or other problem with the band, immediately contact your  
original retailer or an authorized CASIO service center to have it  
checked, repaired, or replaced. Note that you will be charged for any  
repair or replacement of the band. Request band replacement (for  
which you will be charged) from your original retailer or an authorized  
CASIO service center.  
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Temperature  
Never leave the watch on the dashboard of a car, near a heater, or in  
any other location that is subject to very high temperatures. Do not  
leave the watch where it will be exposed to very low temperatures,  
either. Temperature extremes can cause the watch to lose or gain  
time, to stop, or otherwise malfunction.  
Impact  
Your watch is designed to withstand impact incurred during normal  
daily use and light activity such as playing catch, tennis, etc.Dropping  
the watch or otherwise subjecting it to strong impact, however, can  
lead to malfunction. Note that watches with shock-resistant designs  
(G-SHOCK, Baby-G, G-ms) can be worn while operating a chain saw  
or engaging in other activities that generate strong vibration, or while  
engaging in strenuous sports activities (motocross, etc.)  
Magnetism  
The hands of analog and combination (analog-digital) watches are  
moved by a motor that uses magnetic force. When such a watch is  
close to a device (audio speakers, magnetic necklace, cell phone,  
etc.) that emits strong magnetism, the magnetism can cause  
timekeeping to slow down, speed up, or stop, resulting in the incorrect  
time being displayed.  
Electrostatic Charge  
Exposure to very strong electrostatic charge can cause the watch  
to display the wrong time.Very strong electrostatic charge even can  
damage electronic components.  
Chemicals  
Do not allow the watch to come into contact with thinner, gasoline,  
solvents, oils, or fats, or with any cleaners, adhesives, paints,  
medicines, or cosmetics that contain such ingredients. Doing so can  
cause discoloration of or damage to the case, resin band, leather,  
and other parts.  
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Storage  
If you do not plan to use the watch for a long time, wipe it thoroughly  
free of all dirt, sweat, and moisture, and store it in a cool, dry  
place.  
Resin Components  
Allowing the watch to remain in contact with other items or storing it  
together with other items while it is wet for long periods can cause  
the color of the other items to transfer to the resin components of  
the watch. Be sure to dry off the watch thoroughly before storing it  
and make sure it is not in contact with other items.  
Leaving the watch where it is exposed to direct sunlight (ultraviolet  
rays) for long periods or failure to clean dirt from the watch for long  
periods can cause it to become discolored.  
Friction caused by certain conditions (frequent external force,  
sustained rubbing, impact, etc.) can cause discoloration of painted  
components.  
If there are printed figures on the band, strong rubbing of the printed  
area can cause discoloration.  
Failure to clean dirt from the watch for long periods can cause  
fluorescent color to fade.Wash dirt off with water as soon as possible  
and then dry the watch.  
Semi-transparent resin parts can become discolored due to sweat and  
dirt, and if exposed to high temperatures for long periods.  
Contact an authorized CASIO service center to have resin  
components replaced.Note that you will be charged for replacement  
costs.  
Natural Leather and Imitation Leather  
Bands  
Allowing the watch to remain in contact with other items or storing it  
together with other items while it is wet for long periods can cause the  
color of the other items to transfer to the natural leather or imitation  
leather band of the watch. Be sure to dry off the watch thoroughly  
before storing it and make sure it is not in contact with other items.  
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Leaving a leather band where it is exposed to direct sunlight  
(ultraviolet rays) for long periods or failure to clean dirt from a leather  
band for long periods can cause it to become discolored.  
Important!  
Subjecting a natural leather or imitation leather band to rubbing or  
dirt can cause color transfer and discoloration.  
Metal Components  
Failure to clean dirt from a metal band can lead to formation of rust,  
even if the band is stainless steel or plated. If the watch is exposed  
to sweat or water, wipe it thoroughly with a soft, absorbent cloth and  
then store it in a well-ventilated location to dry.  
To clean the band, use a soft toothbrush or similar tool to scrub it with  
a weak solution of water and a mild neutral detergent, or with soapy  
water. Take care to avoid getting solution on the watch case.  
Bacteria and Odor Resistant Band  
The bacteria and odor resistant band protects against odor generated  
by the formation of bacteria from sweat, which ensures comfort and  
hygiene. In order to ensure maximum bacteria and odor resistance,  
keep the band clean. Use an absorbent soft cloth to wipe the band  
clean of dirt, sweat, and moisture. The bacteria and odor resistant  
band suppresses the formation of organisms and bacteria. It does  
not protect against rash due to allergic reaction, etc.  
Note that CASIO COMPUTER CO., LTD. assumes no  
responsibility for any damage or loss suffered by you or any third  
party arising through the use of this watch or its malfunction.  
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Battery  
The special rechargeable battery used by your watch is not intended  
to be removed or replaced by you. Use of a rechargeable battery  
other than the special one specified for this watch can damage  
the watch.  
The rechargeable battery is charged when the solar cell is exposed  
to light, and so regular periodic replacement is not required.However,  
charging and discharging of the battery over the years leads naturally  
to a loss in its ability to sustain a charge and shortens its operating  
time. If this happens, contact your original retailer or authorized  
CASIO service center.  
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User Maintenance  
Caring forYour Watch  
A dirty or rusty case or band can soil the sleeve of your clothing,  
cause skin irritation, and even interfere with watch performance.  
Be sure to keep the case and band clean at all times. Rust tends  
to form easily after the watch is exposed to seawater and then left  
without cleaning.  
Sometimes a smudge like pattern may appear on the surface of a  
resin band.This will not have any affect on your skin or clothing.Wipe  
the band with a cloth to clean it.  
Keep a leather band clean by wiping it with a dry cloth. Both resin  
bands and leather band can become worn and cracked over time  
when subjected to normal daily use.  
Should your band become badly cracked or worn, be sure to have  
it replaced with a new one. Request band replacement from your  
original retailer or an authorized CASIO service center. Note that  
you will be charged for band replacement costs, even if your watch  
is still covered by its warranty.  
Remember that you wear your watch next to your skin, just like a  
piece of clothing.Because of this, you should always keep your watch  
clean. Use a soft absorbent cloth to wipe off any dirt, sweat, water,  
or other foreign matter from the case and band.  
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Dangers of Poor Watch Care  
Rust  
Though the stainless steel used for the watch is highly rust-resistant,  
rust can form if the watch is not cleaned after it becomes dirty.  
Failure of oxygen to come into contact with the metal because it is  
dirty causes breakdown of the oxidization layer on the metal surface,  
which leads to the formation of rust.  
Even if the surface of the metal appears clean, sweat and rust in  
crevasses can soil the sleeves of clothing, cause skin irritation, and  
even interfere with watch performance.  
Premature Wear  
Leaving sweat or water on a resin band or storing it an area subject to  
high moisture can lead to premature wear, cuts, and breaks.  
Skin Irritation  
Individuals with sensitive skin or in poor physical condition may  
experience skin irritation when wearing a watch. Such individuals  
should keep their leather band or resin band particularly clean, or  
switch to a metal band. Should you ever experience a rash or other  
skin irritation, immediately remove the watch and contact a skin  
care professional.  
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