MO0801-EA
Operation Guide 4719
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.
• The actual level at which some functions are disabled depends on the watch model.
• Be sure to read “Power Supply” for important information you need to know
when exposing the watch to bright light.
Keep the watch exposed to bright light
The electricity generated by the solar cell of the watch is
If the analog hands aren’t moving...
If the analog hands aren’t moving, it means that the power saving mode has stopped
them to save battery power.
• See “Power Saving” for more information.
• The hands also stop when the watch’s battery runs down.
Bright light
stored by a built-in battery. Leaving or using the watch
where it is not exposed to light causes the battery to run
down. Make sure the watch is exposed to light as much as
possible.
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• When you are not wearing the watch on your wrist,
position the face so it is pointed at a source of bright
light.
Solar cell
About This Manual
Stopwatch 1/20 second hand
• Button operations are indicated using the letters shown
in the illustration.
• You should try to keep the watch outside of your sleeve
as much as possible. Even if the face of the watch is
blocked only partially from light, charging will be reduced
significantly.
• Each section of this manual provides you with the
information you need to perform operations in each
mode. Further details and technical information can be
found in the “Reference” section.
Minute hand
Hour hand
• The watch continues to operate, even when it is not exposed to light. Leaving the
watch in the dark can cause the battery to run down, which will result in some watch
functions to be disabled. If the battery goes dead, you will have to re-configure watch
settings after recharging. To ensure normal watch operation, be sure to keep it
exposed to light as much as possible.
Battery charges in the light.
Solar cell
Battery discharges in the dark.
Date
24-hour hand
Second hand
(Converts light to
electrical power.)
Bright light
Some functions disabled.
Stopwatch
minute hand
Electrical
energy
(Timekeeping/
Stopwatch)
All
functions
enabled.
LEVEL 1
LEVEL 2
LEVEL 1
LEVEL 2
Dis-
charge
Charge
Rechargeable battery
General Guide
• Press C to change from mode to mode.
Stopwatch Mode
Dual Time Mode
• About 1.5 seconds after you enter the Dual Time Mode, Alarm Mode, or Hand
Setting Mode the hands will move the position that indicates the current setting of
the mode.You cannot change to another mode while the hands are moving. To
change to another mode, either press C before the hands start to move, or wait
until the hands stop before pressing C.
• In the Timekeeping Mode (except when a setting screen is on the display), press B
to illuminate the face of the watch.
Timekeeping Mode
Hand Setting Mode
Alarm Mode
Press C.
Radio-controlled Atomic Timekeeping
3. Press A to exit the setting screen.
This watch receives a time calibration signal and updates its time setting accordingly.
The time calibration signal includes both Standard Time and Daylight Saving Time
(summer time) data.
• The second hand will advance at high speed to the correct position and resume
normal movement from there.
• Normally, your watch should show the correct time as soon as you specify your
Home Time Zone. If it does not, it should adjust automatically after the next auto
receive operation (in the middle of the night).You also can perform manual receive
or you can set the time manually.
• Supported time calibration signals: Germany (Mainflingen), England (Anthorn).
• See the information under “Signal Reception Troubleshooting” if you experience
problems with time calibration signal reception.
• Selecting +0.0, +1.0, or +2.0 (+1.0, +2.0, or +3.0 while DST is turned on) as your
Home Time Zone automatically turns on auto receive. When auto receive is turned
on and you are within the reception range, the watch will receive the time calibration
signal from the applicable transmitter automatically (in the middle of the night) and
update its settings accordingly. For information about the relationship between time
zones (GMT differential values) and transmitters, see “Transmitters”.
• See the maps under “Approximate Reception Ranges” for information about the
reception ranges of the watch.
• If you are in an area that does not use Daylight Saving Time (summer time), turn off
the DST setting.
• Even if the time calibration signal is received correctly, there are some times when
the analog hands may not indicate the correct time. If this happens, use the
procedures under “Adjusting the Home Positions” to check the home positions of the
hands, and make adjustments as required.
Current Time Setting
This watch adjusts its time setting automatically in accordance with a time calibration
signal.You also can perform a manual procedure to set the time and date, when
necessary.
• The first thing you should do after purchasing this watch is to specify your
Home Time Zone, which is the time zone where you normally will use the
watch. For more information, see “To specify your Home Time Zone” below.
• When using the watch outside the range of the time signal transmitter, you have to
adjust the current time setting manually as required. See “Timekeeping” for more
information about manual time settings.
To specify your Home Time Zone
1. In the Timekeeping Mode, hold down A until the GMT
DST indicator
differential value starts to flash, which indicates the
setting screen.
• The GMT differential value indicates the time
difference in hours between Greenwich Mean Time
and the currently selected time zone.
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal:
auto receive and manual receive.
• The second hand will move at high speed to the 12
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• Auto Receive
o’clock position, where it will stop.
• The DST indicator indicates that Daylight Saving Time
(summer time) is turned on for the currently selected
time zone.
With auto receive, the watch receives the time calibration signal automatically up to six
times a day. When any auto receive is successful, the remaining auto receive
operations are not performed. For more information, see “About Auto Receive”.
2. Use B (+) to select the time zone you want to use as
your Home Time Zone.
• The following are the GMT differential values for major
cities in the Western Europe time zones.
• Manual Receive
GMT differential
value
Manual receive lets you start a time calibration receive operation with the press of a
button. For more information, see “To perform manual receive”.
Important!
• When getting ready to receive the time calibration signal, position the watch as
shown in the nearby illustration, with its 12 o’clock side facing towards a window.
This watch is designed to receive a time calibration signal late at night. Because of
this, you should place the watch near a window as shown in the illustration when you
take it off at night. Make sure there are no metal objects nearby.
Time Zone
Major cities in the time zone
London, Dublin, Lisbon, Casablanca,
Dakar, Abidjan
Paris, Milan, Rome, Madrid,
+0.0 (DST +1.0)
+1.0 (DST +2.0) Amsterdam, Algiers, Hamburg,
Frankfurt, Vienna, Stockholm, Berlin
Athens, Cairo, Jerusalem, Helsinki,
+2.0 (DST +3.0)
12 o’clock
or
Istanbul, Beirut, Damascus,
Cape Town
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Operation Guide 4719
Illumination
An LED (light-emitting diode) illuminates the face of the
To toggle a time zone between Standard Time and Daylight Saving Time
1. In the Dual Time Mode, use B to display the time zone
whose Standard Time/Daylight Saving Time setting you
want to change.
watch for easy reading in the dark. The watch’s auto light
switch turns on illumination automatically when you angle
the watch towards your face.
• The auto light switch must be turned on for it to operate.
• See “Illumination Precautions” for other important
information.
2. Hold down A to toggle between Daylight Saving Time
(DST indicator displayed) and Standard Time (DST
indicator not displayed).
• Turning on DST causes the GMT differential value to be
To illuminate the face of the watch
increased by one.
In the Timekeeping Mode (except when a setting screen is
on the display), press B to illuminate the face of the
watch for about one second.
DST indicator
• The above operation turns on illumination regardless of
the current auto light switch setting.
• The DST indicator appears on the display whenever you display a time zone for
which Daylight Saving Time is turned on.
• The DST/Standard Time setting you configure affects only the currently displayed
time zone. Other time zones are not affected.
About the Auto Light Switch
Turning on the auto light switch causes the face to illuminate, whenever you position
your wrist as described below in any mode. Note that this watch features a “Full Auto
LED Light”, so the auto light switch operates only when available light is below a
certain level. It does not illuminate the display under bright light.
• The auto light switch is always disabled, regardless of its on/off setting, when any
one of the following conditions exists.
• The (GMT: Greenwich Mean Time) time zone cannot be switched between
Standard Time and Daylight Saving Time.
Alarm
When an alarm is sounding
When the alarm is turned on, the alarm sounds when the
alarm time is reached.
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C.
Alarm time minute hand
While an auto receive operation is in progress
While a button is depressed
Alarm time 24-
hour hand
Moving the watch to a position that is parallel to the ground and then tilting it
towards you at more than 40 degrees causes illumination to turn on.
• Wear the watch on the outside of your wrist.
To set an alarm time
1. In the Alarm Mode, hold down A for about two
display the setting mode.
seconds to
2. Use B to change the alarm time.
• Each press of B moves the hands clockwise in one-
minute steps.
Parallel to
ground
More than
40°
3. After setting the alarm time, press A to exit the setting
mode.
• Setting the alarm time causes the alarm to turn on
automatically.
Alarm time
hour hand
On/Off status
Warning!
• Always make sure you are in a safe place whenever you are reading the face
of watch using the auto light switch. Be especially careful when running or
engaged in any other activity that can result in accident or injury. Also take
care that sudden illumination by the auto light switch does not startle or
distract others around you.
• When you are wearing the watch, make sure that its auto light switch is turned
off before riding on a bicycle, or operating a motorcycle or any other motor
vehicle. Sudden and unintended operation of the auto light switch can create a
distraction, which can result in a traffic accident and serious personal injury.
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in.
• Alarm operations are performed in accordance with the Timekeeping Mode time.
• Pressing any button stops the alarm tone operation.
To toggle an alarm on and off
In the Alarm Mode, press B to toggle the alarm on (ON) and off (OF).
• The watch will beep when you turn on the alarm.
To turn the auto light switch on and off
In the Timekeeping Mode (except when a setting screen is on the display), hold down
B for about three seconds to toggle the auto light switch on and off.
• Turning on the auto light switch will cause the watch to beep. The “ON” indicator
(ON) will appear and the light will turn on for 1.5 seconds.
Adjusting the Home Positions
• If the time and date settings are off even after the time calibration signal is received
normally, use the following procedure to adjust their home positions.
• You can use the procedure in this section to adjust the position of the second hand,
the stopwatch minute hand and stopwatch 1/20 second hand whenever they do not
align with the 12 o’clock position when you enter the Hand Setting Mode.
• Turning off the auto light switch will cause the watch to beep. The “OFF” indicator
(OF) will appear for 1.5 seconds. The light will not turn on.
Power Supply
To adjust the home positions
1. In the Timekeeping Mode, press C four times to enter
the Hand Setting Mode.
This watch is equipped with a solar cell and a special rechargeable battery (secondary
battery) that is charged by the electrical power produced by the solar cell. The
illustration shown below shows how you should position the watch for charging.
Second hand
2. In the Hand Setting Mode, hold down A until 0 0 starts
to flash, which indicates the analog setting screen.
• The second hand is at the proper home position if it
moves to 12 o’clock. If it doesn’t, press B to move it
to 12 o’clock.
Example: Orient the watch so its face is
pointing at a light source.
Solar cell
• The illustration shows how to position
a watch with a resin band.
3. After confirming that the second hand is at the proper
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home position, press C. This will switch to hour hand
and minute hand home position adjustment (Hm
flashes).
• The hour hand and minute hand are at their proper
home positions if they both move to 12 o’clock, and if
the 24-hour hand is pointing at hour 24. If the hands
are not positioned correctly, use B to move them to
their proper home positions.
• Note that charging efficiency drops
when any part of the solar cell is
blocked by clothing, etc.
• You should try to keep the watch
outside of your sleeve as much as
possible. Even if the face of the watch
is blocked from light only partially,
charging will be reduced significantly.
Minute hand
Hour hand
4. After confirming that the hour hand and minute hand
are both at their proper home positions, press C.
This will switch to stopwatch 1/20 second hand home
position adjustment (20 flashes).
Important!
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• Storing the watch for long periods in an area where there is no light or wearing it in
such a way that it is blocked from exposure to light can cause rechargeable battery
power to run down. Make sure that the watch is exposed to bright light whenever
possible.
• The stopwatch 1/20 second hand is at the proper
24-hour
hand
home position if it moves to 0. If it doesn’t, use B to
move it to 0.
• This watch uses a special rechargeable battery to store power produced by the solar
cell, so regular battery replacement is not required. However, after very long use, the
rechargeable battery may lose its ability to achieve a full charge. If you experience
problems getting the special rechargeable battery to charge fully, contact your dealer
or CASIO distributor about having it replaced.
• Never try to remove or replace the watch’s special battery yourself. Use of the wrong
type of battery can damage the watch.
• The current time and all other settings return to their initial factory defaults whenever
battery power drops to Level 3 and when you have the battery replaced.
• Keep the watch in an area normally exposed to bright light when storing it for long
periods. This helps to keep the rechargeable battery from going dead.
Stopwatch 1/20 second hand
5. After confirming that the stopwatch 1/20 second hand is
at the proper home position, press C. This will switch
to stopwatch minute hand home position adjustment
(60 flashes).
• The stopwatch minute hand is at the proper home
position if it moves to 60. If it doesn’t, use B to move
it to 60.
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6. Press A to exit the setting screen.
• After you complete the home position adjustment
procedure, place the watch in a location that allows
good time calibration signal reception, and then perform
a manual receive operation. See “To perform manual
receive” for more information.
Stopwatch minute hand
Battery Power Levels
Battery power level is indicated by hand movement and a display indicator.
Hand Movement/
Display Indicator
Level
Function Status
1
2
Normal
All functions enabled.
• Second hand jumps
every two seconds.
• LO displayed.
Illumination, alarm and
signal reception disabled.
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3
• All hands stopped.
• Display is blank.
All functions disabled.
Jumps 2 seconds
• Battery level is very low when the second hand jumps every two seconds and the
display shows LO. Expose the watch to light and charge the battery as soon as
possible.
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Operation Guide 4719
• When battery power is at Level 2, time calibration signal reception is disabled.
2. Use B to select the time zone you want to use as your Home Time Zone.
• For full details about GMT differential values, see the “Time Zone Table”.
3. Press C to move the flashing in the sequence shown below to select other
settings.
• Alarm operation can cause hand movement to stop due to the sudden temporary
drop in battery power. This does not indicate malfunction, and normal operation will
resume when the watch is exposed to light.Though hand movement stops,
timekeeping continues internally, and the hands will be adjusted to the correct
setting when normal operation returns.
GMT differential
Minutes
Year
DST
value
• At Level 3, all functions are disabled and settings return to their initial factory
defaults. Functions are enabled once again after the rechargeable battery is
charged, but you need to set the time and date, after the battery reaches Level 1
from Level 3.
Day
Month
• Leaving the watch in direct sunlight or some other very strong light source can
cause the battery power indication to show a reading that is momentarily higher than
the actual battery level. The correct battery power indication should appear after a
few minutes.
4. When the setting you want to change is flashing, use B to change it as described
below.
Screen To do this:
Change the time zone
Do this:
Press B.
Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid leaving
the watch in the areas described below whenever charging its rechargeable battery.
Toggle between Daylight Saving Time ( ), Press B.
Standard Time ( ), or Auto DST (
)
Change the minutes (time)
Press B.
Press B.
Warning!
Leaving the watch in bright light to charge its rechargeable battery can cause it
to become quite hot.Take care when handling the watch to avoid burn injury.
The watch can become particularly hot when exposed to the following
conditions for long periods.
Change the year
Change the month
Change the day
Press B.
Press B.
• On the dashboard of a car parked in direct sunlight
• Too close to an incandescent lamp
• Under direct sunlight
5. Press A to exit the setting screen.
Charging Guide
• When you exit the setting screen, the analog hands are adjusted automatically to
After a full charge, timekeeping remains enabled for up to about eight months.
• The following table shows the amount of time the watch needs to be exposed to light
each day in order to generate enough power for normal daily operations.
match the digital time.
• Auto DST ( ) can be selected only while +0.0, +1.0, or +2.0 (+1.0, +2.0, or +3.0
while DST is turned on) is selected as the Home Time Zone. For more information,
see “Daylight Saving Time (DST)” below.
Exposure Level (Brightness)
Outdoor sunlight (50,000 lux)
Approximate Exposure Time
8 minutes
Daylight SavingTime (DST)
Sunlight through a window (10,000 lux)
30 minutes
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
Daylight through a window on a cloudy day
(5,000 lux)
48 minutes
The time calibration signals include both Standard Time and DST data. When the auto
DST setting is turned on, the watch switches between Standard Time and DST
(summer time) automatically in accordance with the signal it receives.
• The auto DST setting can be turned on only while +0.0, +1.0, or +2.0 (+1.0, +2.0, or
+3.0 while DST is turned on) is selected as the Home Time Zone.
• If you experience problems receiving the time calibration signal in your area, it is
probably best to switch between Standard Time and Daylight Saving Time (summer
time) manually.
Indoor fluorescent lighting (500 lux)
8 hours
• Since these are the specs, we can include all the technical details.
• Watch is not exposed to light
• Internal timekeeping
• Analog hands operational 18 hours per day, sleep state 6 hours per day
• 10 seconds of alarm operation per day
• 1 illumination operation (1.5 seconds) per day
• 1 time calibration reception per day
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down A until the GMT differential value starts to
flash, which indicates the setting screen.
2. Press C to display the DST setting screen.
3. Press B to cycle through the DST settings in the sequence shown below.
• Stable operation is promoted by frequent charging.
RecoveryTimes
The table below shows the amount exposure that is required to take the battery from
one level to the next.
Auto DST (
)
DST off (
)
DST on (
)
Exposure Level
(Brightness)
Approximate Exposure Time
Level 3
Level 2
Level 1
4. Press A to exit the setting screen.
Outdoor sunlight (50,000 lux)
2 hours
5 hours
27 hours
• The DST indicator appears on the display to indicate that Daylight Saving Time is
turned on.
Sunlight through a window
(10,000 lux)
133 hours
– – –
• Turning on DST causes the GMT differential value to be increased by one.
• The (GMT: Greenwich Mean Time) time zone cannot be switched between
Standard Time and Daylight Saving Time.
Daylight through a window on
a cloudy day (5,000 lux)
9 hours
Indoor fluorescent lighting
(500 lux)
109 hours
– – –
Reference
• The above exposure time values are all for reference only. Actual required exposure
times depend on lighting conditions.
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Timekeeping
Power Saving
Power Saving enters a sleep state automatically whenever the watch is left for a
certain period in an area where it is dark. The table below shows how watch functions
are affected by Power Saving.
Use the Timekeeping Mode to set and view the current
time and date. This section also explains how to set the
current date and time manually.
• All of the operations in this section are performed in the
Timekeeping Mode, which you enter by pressing C.
Hour hand
Minute hand
• There actually are two sleep state levels: “second hand sleep” and “function sleep”.
Elapsed Time in Dark
Operation
60 to 70 minutes
(second hand sleep)
Second hand is stopped and display is blank. All other
functions are enabled.
6 or 7 days
• All functions, including analog timekeeping, disabled
• Internal timekeeping maintained
Date
24-hour hand
(function sleep)
• Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
• The watch will not enter the sleep state between 6:00 AM and 9:59 PM. If the watch
is already in the sleep state when 6:00 AM arrives, however, it will remain in the
sleep state.
Second hand
Setting the Time and Date Manually
Make sure you select your Home Time Zone before you change the current time and
date settings. Dual Time Mode times are all displayed in accordance with the
Timekeeping Mode settings. Because of this, Dual Time Mode times will not be correct
if you do not select the proper Home Time Zone before setting the time and date in the
Timekeeping Mode.
• When setting the time and date, you also can configure settings for your Home Time
Zone (the time zone where you normally use the watch) and summer time (Daylight
Saving time or DST).
To recover from the sleep state
Perform any one of the following operations.
• Move the watch to a well-lit area.
• Press any button.
Auto Return Features
• If you leave the watch in the Alarm or Hand Setting Mode for two or three minutes
without performing any operation, it returns to the Timekeeping Mode automatically.
• If you do not perform any operation for about two or three minutes while a setting
mode is selected, the watch will exit the setting mode automatically.
To set the time and date manually
1. In the Timekeeping Mode, hold down A until the GMT
differential value starts to flash, which indicates the
setting screen.
DST indicator
Scrolling
• The B button is used to change the hand setting in various setting modes. In most
cases, holding down this button will start high-speed movement of the applicable
hand(s).
• The second hand will move at high speed to the 12
o’clock position, where it will stop.
• High-speed movement of hands will continue until you press any button, or until the
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moving hand(s) finishes one complete cycle.
GMT differential value
: +2.0 : –4.0
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- One complete cycle for the hands is one revolution (360 degrees) or 24 hours.
Minus sign
• The GMT differential value indicates the time difference in hours between
Greenwich Mean Time and the currently selected time zone.
• The DST indicator indicates that Daylight Saving Time (summer time) is turned on
for the currently selected time zone.
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Operation Guide 4719
• See “Stopwatch” for details about using the stopwatch.
Radio-controlled Atomic Timekeeping Precautions
• Strong electrostatic charge can result in the wrong time being set.
• The time calibration signal bounces off the ionosphere. Because of this, such
factors as changes in the reflectivity of the ionosphere, as well as movement of
the ionosphere to higher altitudes due to seasonal atmospheric changes or the
time of day may change the reception range of the signal and make reception
temporarily impossible.
• The tachymeter can be used only when you are traveling by car or some other
means that can cover one kilometer or one mile within 60 seconds.
Time Zone Table
GMT Differential Value
Standard Time DST/Summer Time
• Even if the time calibration signal is received properly, certain conditions can
cause the time setting to be off by up to one second.
Major Cities in Same Time Zone
–11.0
–10.0
–9.0
DST –10.0
DST –9.0
DST –8.0
DST –7.0
Pago Pago
Honolulu, Papeete
Anchorage, Nome
Los Angeles, San Francisco, Las Vegas, Vancouver,
Seattle/Tacoma, Dawson City, Tijuana
• The current time setting in accordance with the time calibration signal takes
priority over any time settings you make manually.
• The watch is designed to update the date and day of the week automatically for
the period January 1, 2000 to December 31, 2099. Setting of the date by the
time calibration signal will not be performed starting from January 1, 2100.
• This watch can receive signals that differentiate between leap years and non-leap
years.
• Though this watch is designed to receive both time data (hour, minutes, seconds)
and date data (year, month, day), certain signal conditions can limit reception to time
data only.
• If you are in an area where proper time calibration signal reception is impossible, the
watch keeps time within 20 seconds a month at normal temperature.
• If you have problems with proper time calibration signal reception or if the time
setting is wrong after signal reception, check your current Home Time Zone, and
DST (summer time).
–8.0
–7.0
–6.0
DST –6.0
DST –5.0
Denver, El Paso, Edmonton, Culiacan
Chicago, Houston, Dallas/Fort Worth, New Orleans,
Mexico City, Winnipeg
–5.0
DST –4.0
New York, Montreal, Detroit, Miami, Boston,
Panama City, Havana, Lima, Bogota
–4.0
–3.0
DST –3.0
DST –2.0
Caracas, La Paz, Santiago, Port of Spain
Rio De Janeiro, Sao Paulo, Buenos Aires, Brasilia,
Montevideo
–2.0
–1.0
G 0.0
+0.0
+1.0
DST –1.0
DST +0.0
G 0.0
DST +1.0
DST +2.0
Praia
(GMT)
Transmitters
London, Dublin, Lisbon, Casablanca, Dakar, Abidjan
Paris, Milan, Rome, Madrid, Amsterdam, Algiers,
Hamburg, Frankfurt, Vienna, Stockholm, Berlin
This watch is designed to receive the time calibration signal transmitted from
Mainflingen, Germany and the signal from Anthorn, England.You can configure the
watch to select the transmitter that has the strongest signal automatically.
+2.0
+3.0
DST +3.0
DST +4.0
Cairo, Jerusalem, Athens, Helsinki, Istanbul, Beirut,
Damascus, Cape Town
Jeddah, Kuwait, Riyadh, Aden, Addis Ababa, Nairobi,
Moscow
In this case:
The watch does this:
The first signal auto search operation
1. Checks the Mainflingen signal first.
after factory default settings are in effect, 2. If the Mainflingen signal cannot be
+3.5
+4.0
+4.5
+5.0
+5.5
+6.0
+6.5
+7.0
+8.0
DST +4.5
DST +5.0
DST +5.5
DST +6.0
DST +6.5
DST +7.0
DST +7.5
DST +8.0
DST +9.0
Tehran, Shiraz
Dubai, Abu Dhabi, Muscat
Kabul
Karachi, Male
Delhi, Mumbai, Kolkata, Colombo
Dhaka
Yangon
or after the time zone has been changed
received, checks the Anthorn signal.
Any case other than the above.
1. Checks the last successfully received
signal first.
2. If the last successfully received signal
cannot be received, checks the other
signal.
Bangkok, Jakarta, Phnom Penh, Hanoi, Vientiane
Hong Kong, Singapore, Kuala Lumpur, Beijing, Taipei,
Manila, Perth, Ulaanbaatar
Timekeeping
• The year can be set in the range of 2000 to 2099.
• The watch’s built-in full automatic calendar makes allowances for different month
lengths and leap years. Once you set the date, there should be no reason to change
it except after you have the watch’s battery replaced.
• The date will change automatically when the current time reaches midnight. The
date change at the end of the month may take more time than normal.
• The current time for all time zones in the Timekeeping Mode and Dual Time Mode is
calculated in accordance with the Greenwich Mean Time (GMT) differential of each
zone, based on your Home Time Zone time setting.
+9.0
+9.5
+10.0
+11.0
+12.0
DST +10.0
DST +10.5
DST +11.0
DST +12.0
DST +13.0
Tokyo, Seoul, Pyongyang
Adelaide, Darwin
Sydney, Melbourne, Guam, Rabaul
Noumea, Port Vila
Wellington, Christchurch, Nadi, Nauru Island
• Based on data as of June 2007.
• GMT differential is calculated by this watch based on Universal Time Coordinated
(UTC*) data.
* UTC is the world-wide scientific standard of timekeeping. It is based upon carefully
maintained atomic (cesium) clocks that keep time accurately to within
microseconds. Leap seconds are added or subtracted as necessary to keep UTC
in sync with the Earth’s rotation. The reference point for UTC is Greenwich,
England.
Illumination Precautions
• The illumination provided by the light may be hard to see when viewed under direct
sunlight.
• Illumination automatically turns off whenever an alarm sounds.
• Frequent use of illumination shortens the battery operating time.
Auto light switch precautions
• Wearing the watch on the inside of your wrist, movement of your arm, or vibration of
your arm can cause frequent activation of the auto light switch and illuminate the
face of the watch. To avoid running down the battery, turn off the auto light switch
whenever engaging in activities that might cause frequent illumination of the face.
• Note that wearing the watch under your sleeve while the auto light switch is turned
on can cause frequent illumination of the face and can run down the battery.
• Illumination may not turn on if the face of the watch is
More than 15 degrees
too high
more than 15 degrees above or below parallel. Make
sure that the back of your hand is parallel to the ground.
• Illumination turns off in about one second, even if you
keep the watch pointed towards your face.
• Static electricity or magnetic force can interfere with
proper operation of the auto light switch. If illumination
does not turn on, try moving the watch back to the
starting position (parallel with the ground) and then tilt it
back towards your face again. If this does not work, drop
your arm all the way down so it hangs at your side, and
then bring it back up again.
• Under certain conditions, illumination may not turn on until about one second after
you turn the face of the watch towards you. This does not necessarily indicate
malfunction of the auto light switch.
• You may notice a very faint clicking sound coming from the watch when it is shaken
back and forth. This sound is caused by mechanical operation of the auto light
switch, and does not indicate a problem with the watch.
Tachymeter
If your watch has a tachymeter bezel, you can perform the
Tachymeter bezel
steps below to calculate average speed after using the
60
H
Stopwatch Mode to measure the amount of time that it
takes to travel one kilometer (or one mile).
• Never try to perform stopwatch operations while you
are driving an automobile, riding a bicycle, or
operating any type of vehicle. Doing so is very
dangerous and can result in accident.
1
0
0
1 In the Stopwatch Mode, start an elapsed time
operation at any point you like.
150
120
2 Stop the elapsed time operation after you travel one
kilometer or one mile.
3 Your average speed will be the value that the second
hand is pointing to on the tachymeter bezel.
• The illustration shows an example where it took 50 seconds to travel one kilometer
by car. The second hand is pointing at 70, which indicates that the average speed is
70 kilometers per hour.
5
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