You are now the proud owner of a SEIKO Radio Wave Controlled
Worldtimer Cal. 7B26. For best results, please read the instructions
in this booklet carefully before using your SEIKO Analogue Quartz
Watch. Please keep this manual handy for ready reference.
Sie sind jetzt stolzer Besitzer einer SEIKO Funk-Weltzeituhr Kal. 7B26.
Bitte lesen Sie diese Bedienungsanleitung vor der Verwendung der Uhr
sorgfältig durch und heben Sie sie gut auf.
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CONTENTS
FEATURES....................................................................................................................... 4
DISPLAY AND BUTTON OPERATION............................................................................. 6
HOW TO USE BUTTON B............................................................................................... 8
THE SCREW LOCK TYPE CROWN ................................................................................. 9
CHARGING THE SOLAR BATTERY.................................................................................10
CHECKING THE CHARGING STATUS BY THE MOVEMENT OF THE SECOND HAND..12
SETTING THE TIME BY RECEIIVIG RADIO SIGNAL.......................................................18
RADIO SIGNAL RECEPTION RANGE..............................................................................22
MANUAL RECEPTION ....................................................................................................26
HOW TO CHECK THE RECEPTION RESULT ..................................................................28
APPROPRIATE PLACE TO KEEP A RADIO-CONTROLLED WATCH ..............................30
TIME ZONE ADJUSTMENT............................................................................................33
WHAT IS A TIME ZONE?................................................................................................34
HOW TO SET THE TIME ZONE......................................................................................40
EXAMPLES OF TIME ZONE ADJUSTMENT ..................................................................46
HOW TO MANUALLY SET THE TIME AND DATE..........................................................52
ABNORMAL DISPLAY OR IMPROPER FUNCTION (HOW TO RESET THE BUILT-IN IC)......56
SPECIFICATIONS............................................................................................................60
TROUBLESHOOTING.....................................................................................................62
For the care of your watch, see “TO PRESERVE THE QUALITY OF YOUR
WATCH” in the attached Limited Warranty and Instruction Booklet.
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ꢀ
ꢁ
FEATURES
This solar radio-controlled watch is equipped with a time zone adjustment function.
The watch can automatically display local time in a different time zone by selecting the time zone.
It can receive official standard frequencies of Germany, the United States and Japan to adjust the
time.
■ TIME ZONE ADJUSTMENT
The watch can be set to local time in a different time zone by selecting a time zone.
■ AUTOMATIC HAND ALIGNMENT
When the hand positions display incorrect time as a result of the influence of various external
sources, the watch automatically corrects the hand alignment itself.
■ AUTOMATIC TIME SETTING
The watch maintains the precise time by automatically receiving radio signals on an official
standard frequency. The watch can receive official standard frequencies of Germany, the United
States, and Japan (from either of two transmitting stations) by selecting the time zone.
Manual reception is also possible (the watch is unable to receive radio signals outside of the
reception range of each standard frequency).
■ SOLAR RECHARGEABLE BATTERY
A solar cell underneath the dial converts any form of light into "electrical energy” to power the
watch and the power is stored in a secondary battery. Once fully charged, the watch continues
to run for approximately six months.
■ DISPLAY OF RADIO SIGNAL RECEPTION LEVEL
During reception attempts, the watch displays the reception level of radio signals.
■ ENERGY DEPLETION FOREWARNING FUNCTION
The movement of the second hand indicates that the battery should be charged.
■ DISPLAY OF RADIO SIGNAL RECEPTION RESULT
Reception result (succeeded or failed) can be confirmed following reception of radio signals.
■ POWER SAVE
The Power Save mode can be activated when the watch is left without an adequate light source.
■ AUTOMATIC CALENDAR
The calendar adjusts odd and even months including February in leap years.
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DISPLAY AND BUTTON OPERATION
Time Zone Display
[Time zone selection]
City names: 24 cities
around the world
Transmitting Stations
of Standard Frequencies
[Reception Result
Confirmation]
T
T
Button A
UTC: Universal
DCF77 (Germany)
WWVB
(manual reception
and reception
result confirmation)
Coordinated Time
DST, arrow mark:
Daylight Saving Time
* Refer to “24 TIME
ZONES AND TIME
DIFFERENCES FROM
UTC” on page 35.
Minute hand
Hour hand
(The United States)
JJY (Japan)
* Refer to “HOW TO
CHECK THE RECEPTION
RESULT” on pages 28-29.
a
b
c
CROWN
(Refer to “THE SCREW
LOCK TYPE CROWN”
on page 9.)
a:Normal Positiion
b:First click
Reception Result
Display
Reception Level Display
[Automatic Reception
and Manual Reception]
H: High reception level
L: Low reception level
N: Unable to receive
radio signals
* Refer to “MANUAL
RECEPTION” on pages
26-27.
Second hand
c:Second click
[Confirmation of
I
reception result]
Button B
I
Y: Reception Successful
N: Reception Failed
* Refer to “HOW TO
CHECK THE RECEPTION
RESULT” on pages 28-29.
(Time zone adjustment)
*Button B is recessed
in the watch case to
prevent accidental
input. Refer to
Date
* Positions of above displays may
diꢀer depending on the model.
“HOW TO USE BUTTON
B” on page 8.
ꢄ
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HOW TO USE BUTTON B
THE SCREW LOCK TYPE CROWN
The crown can be locked to prevent operating errors.
Button B is recessed in the watch case to prevent accidental input. Types of buttons differ
depending on the design of the watch.
HOW TO OPERATE SCREW LOCK TYPE CROWN
- Unscrew the crown before the crown operation.
- Screw in the crown when the operation is over.
HOW TO PRESS BUTTON B
[To unscrew the crown]
Turn the crown counterclockwise. The crown can be pulled out.
[To screw in the crown]
Turn the crown clockwise until it stops while pressing it.
Turn counterclockwise
Locked
Unlocked
Turn clockwise while
pressing it.
Button B is covered except for the The upper half of Button
B
is Button B is recessed in the watch
hollow in the middle of the button. covered. Press the lower half of case. Press the hollow in the middle
Press the hollow using an object Button B or press the hollow in the of the button using an object with a
with a long tapered tip.
middle of the button using an object long tapered tip.
with a long tapered tip.
*The crown can be pulled out after it is unscrewed.
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STANDARD CHARGING TIME
CHARGING THE SOLAR BATTERY
Illumination Light source
1 x (LUX)
Condition (Example) Time required for Time required for Time required for
HOW TO CHARGE THE WATCH
fully charging the charging the
charging the
watch to run for
one day
watch
watch to start
moving at one-
This watch is a solar-powered watch containing a solar cell underneath the dial to convert any
form of light into "electrical energy” and store the power in a secondary battery.
second intervals
—
★
500
700
1000
3000
5000
10000
10000
100000
Incandescencent light 60W 60cm
—
5 hours
Fluorescent light
Fluorescent light
Fluorescent light
Fluorescent light
Fluorescent light
Sunlight
General offices
30W 70cm
30W 20cm
30W 12cm
30W 5cm
—
—
—
3 hours
2 hours
120 hours
30 hours
24 hours
8 hours
8 hours
2 hours
To enjoy optimal performance
of this watch, it is recommended
that the watch be kept sufficiently
charged at all times.
90 hours
70 hours
25 hours
25 hours
8 hours
30 minutes
24 minutes
9 minutes
9 minutes
3 minutes
Cloudy day
Sunlight
Sunny day
*Before initially using the watch
or when the watch has stopped
as a result of complete depletion
of stored power, charge the watch
sufficiently.
(Under direct
sunlight on a
summer day)
*The table above is only provided as an approximation.
★The figures in the table above refer to the time required to charge the stopped watch by exposure to light until the
watch moves at steady one-second intervals, through two-second intervals and five-second intervals.
Even if the watch is partially charged for a period shorter than the time provided in the above table, it will resume
one-second interval movement; however the one-second interval movement will change to two-second interval
movement shortly. To avoid this and charge the watch to a sufficient level, use the charging time mentioned above
as a measure.
*The required charging time slightly varies depending on the model of the watch.
10
11
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CHECKING THE CHARGING STATUS BY THE MOVEMENT OF
THE SECOND HAND
ENERGY DEPLETION FOREWARNING FUNCTION
The second hand moves
The watch is
sufficiently charged.
No need to charge
the watch yet.
at one-second intervals.
The energy depletion forewarning function is activated when the energy stored in the watch runs
low. In such a case, the second hand moves at two-second intervals. If the watch continues
to be in the state of two-second interval movement, the watch switches to five-second interval
movement, followed by a completely stopped state.
The second hand moves
at two-second intervals
Refer to “ENERGY
DEPLETION FOREWARNING
FUNCTION” on page 13
The energy depletion
forewarning function
is activated.
to charge the watch sufficiently.
If the energy depletion forewarning function is activated, charge the watch sufficiently.
HOW TO CHARGE THE WATCH…page 10
The second hand moves
at five-second intervals.
STANDARD CHARGING TIME…page 11
The power save
function is activated.
Refer to “POWER SAVE
*1
FUNCTION” on pages 14-15.
The second hand
is stopped.
*Neither the buttons nor the crown can be operated while the second hand moves at two-second or five-
second intervals (this is not a malfunction).
Energy having been stored in the watch
has been consumed due to reasons
such as leaving the watch in a dark
place for a long time. After charging the
watch sufficiently, conduct manual
*While the second hand moves at five-second intervals, the hour and minute hands and calendar stop
operating.
The watch completely
stops operating.
*While the second hand moves at five-second intervals, the watch is unable to receive radio signals
automatically. After the watch is charged sufficiently and the second hand returns to normal one-second
interval movement, conduct the manual reception of radio signals to set the watch to the correct time. After
completing the radio signal reception, when the date is incorrect even if the correct time is displayed, check
that the calendar is set to the preliminary position (refer to “RADIO SIGNAL RECEPTION” on page 20 and
“PRELIMINARY POSITION CHECKING AND SETTING FOR THE CALENDAR” on pages 58-59).
reception to set the time.
*2
*1. If the second hand is stopped even after the watch is sufficiently charged, refer to "TROUBLESHOOTING" on pages 64-65.
*2. After the watch receives a radio signal, when the date is incorrect even if the correct time is displayed,
check that the calendar is set to the preliminary position (refer to “PRELIMINARY POSITION CHECKING
AND SETTING FOR THE CALENDAR” on pages 58-59).
1ꢀ
1ꢁ
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POWER SAVE FUNCTION
When the watch is not exposed to an adequate light source, the power save function is
automatically activated in order to reduce unnecessary energy consumption.
[POWER SAVE ꢀ]
•If the watch continues to be insufficiently charged, and the stored power falls below a certain
level, the watch automatically switches to "the Power Save Two” mode, to limit further energy
consumption. When the watch is in "the Power Save Two” mode, the second hand rotates to point
to the ꢂꢃ-second position and stops.
When this state continues for ꢅꢀ hours or longer, the watch enters "the Power Save One” mode.
If the watch continues to be insufficiently charged, and the stored power falls below a certain level,
the watch automatically switches to "the Power Save Two” mode.
•In this state, movement of the hour and minute hands and calendar operation will cease and the
watch will also stop conducting automatic reception.
[POWER SAVE 1]
•When this state continues for ꢅꢀ hours or longer, the watch enters
"the Power Save One” mode.
•When the watch enters "the Power Save Two” mode, immediately
charge the watch.
•When the watch is in "the Power Save One” mode, the second
hand rotates to point to the 1ꢃ-second position and stops.
•In this state, movement of the hour and minute hands and
calendar operation will cease, but the watch will continue to
conduct automatic reception.
*While the watch is being charged, the second hand moves at five-second
intervals. During the five-second interval movement, neither the buttons nor the
crown can be operated (this is not a malfunction).
*If “the Power Save Two” mode is prolonged, the amount of stored power drops
and the internal time settings will be lost. In such a case, after completing
battery charging, conduct the manual reception to set the watch to the correct
time. After completing the radio signal reception, when the date is incorrect
even if the correct time is displayed, check that the calendar is set to the
preliminary position (refer to “RADIO SIGNAL RECEPTION” on page 20 and “ PRELIMINARY POSITION CHECKING
AND SETTING FOR THE CALENDAR” on pages 58-59).
•To reset the watch to display the current time, expose it to
adequate light for five seconds or longer.
*When the watch returns to its normal movement, the watch hands rotate rapidly to display the current time. After
the watch hands are set to the current time, the correct date is displayed.
1ꢂ
1ꢃ
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OVERCHARGE PREVENTION FUNCTION
POWER SOURCE
The solar cell underneath the dial converts light into "electrical energy” and stores the power
in a secondary battery. When the secondary battery is fully charged, the overcharge prevention
function is automatically activated to avoid further charging. There is no need to worry about
damage caused by overcharging no matter how much the secondary battery is charged in excess
of the "time required for fully charging the watch.”
•The battery used in this watch is a special secondary battery, which is different from ordinary
batteries. Unlike an ordinary silver oxide battery, the secondary battery does not require periodic
replacement.
•The secondary battery is an environmentally friendly, clean energy storage device.
*Refer to “STANDARD CHARGING TIME” on page 11 to check the time required for fully charging the watch.
WARNING
WARNING
(Notes on charging the watch)
When replacing the secondary battery, make sure that the exclusive secondary battery for
this watch is used. Installation of an ordinary silver oxide battery can generate heat that
can cause bursting or ignition.
When charging the watch, do not place the watch in close proximity to an intense light
source such as lighting equipment for photography, spotlights or incandescent lights, as
the watch may be excessively heated resulting in damage to its internal parts.
When charging the watch by exposure to direct sunlight, avoid places that easily reach
high temperatures, such as a car dashboard.
Even when a silver oxide battery is substituted, electrical continuity cannot be obtained.
Always keep the watch temperature under 60ºC.
1ꢄ
1ꢅ
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SETTING THE TIME BY RECEIIVING RADIO SIGNAL
AUTOMATIC HAND ALIGNMENT
Under normal operation, periodic checks of each hand position are performed once every one-
minute for the second hand position, and once every twelve hours for the hour and minute hand
positions.
WHAT IS A RADIO-CONTROLLED WATCH?
The radio-controlled watch displays the precise time and date by automatically receiving and
synchronizing itself with the radio signal of an official standard frequency.
<When the hand positions move out of alignment >
・Strong shocks can cause misalignment of the hand positions
ꢀThe hand positions may move out of alignment due to strong shocks to the watch when the watch is dropped or
hits against a hard surface.
・Strong magnetism can cause misalignment of the hand positions.
ꢀThe hand positions may move out of alignment due to strong magnetism generated by mobile phones, speakers,
magnetic therapy devices, or other magnetized objects.
Transmitting
Station
Radio-controlled
watch
Receives radio signals through
the antenna inside the watch
Official
standard
frequency
・When the watch is stopped due to complete depletion of stored power
Analyzes time information
Cesium
Atomic
Clock
The radio-controlled watch automatically sets itself to the precise time. However, if the preliminary
hand positions are misaligned when the time is set, the watch will be unable to display the precise
time even after it receives a radio signal properly. It is like a scale which cannot display the correct
weight because its hand is not set to the 0 position before weighing.
Displays the current time
and date
Be assured that all hand positions of this watch are automatically corrected as long as the watch
receives radio signals properly, omitting complicated procedures.
Time signal transmitted by a standard frequency is based on a super accurate "Cesium Atomic
Clock” that may have a 1 second loss or gain per one hundred thousand years
1ꢆ
1ꢇ
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RADIO SIGNAL RECEPTION
The watch can receive a radio signal either automatically or manually.
- Automatic reception: The watch receives radio signals automatically at least once a day.
It automatically receives radio signals at 2:00 AM, 3:00 AM, and 4:00 AM.
When the watch receives a proper radio signal, the reception is completed.
The watch can continue to display the precise time as long as the automatic reception is successful.
- Manual reception: The manual reception of radio signals can be conducted.
MANUAL RECEPTION …pages 26-27
This watch can receive official standard frequencies from transmitting stations in Germany, the
United States, and Japan (ꢀ stations). The standard frequency to be received can be changed by
selecting the time zone.
- TIME ZONE ADJUSTMENT...page 33.
[Official standard frequency in Germany: DCF77]
DCF77 is operated by Physikalisch-Technisch Bundesanstalt(PTB).
Mainflingen transmitting station (77.5 KHz) in southeastern Frankfurt
This radio-controlled watch enables the wearer to check the reception result of radio signals.
- HOW TO CHECK THE RECEPTION RESULT…pages 28-29
[Official standard frequency in the United States: WWVB]
WWVB is operated by National Institute of Standards and Technology (NIST).
Fort Collins radio station (60KHz), Denver, Colorado
*If the watch is set to a time zone outside radio signal reception range, manual reception cannot be
conducted (refer to“TIME ZONE DISPLAY” on pages 36-39).
*Whether the watch succeeds in receiving radio signals or not depends on the receiving conditions (refer to
“APPROPRIATE PLACE TO KEEP A RADIO-CONTROLLED WATCH” on page 30).
*The watch cannot receive radio signals outside a reception range (refer to“RADIO SIGNAL RECEPTION
RANGE” on pages 22-25).
[Official standard frequency in Japan: JJY]
JJY is operated by the National Institute of Information and Communications Technology (NICT).
JJY is transmitted from two stations in Japan. Each station transmits JJY in a different frequency.
Fukushima (Ohtakadoya-yama transmitting station: 40 KHz)
Kyushu (Hagane-yama transmitting station: 60 KHz)
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EUROPE (DCF77 from Germany)
RADIO SIGNAL RECEPTION RANGE
The reception range from the transmitting station is approximately 1,000 km (1,000 km radius of
Mainflingen transmitting station). There are three time zones within the reception range.
This watch can receive official standard frequencies of Germany, the United States, and Japan.
Mainflingen
transmitting
station
(77.5 KHz)
1000 km
Germany
(DCF77)
Japan(JJY)
The United States
(WWVB)
* The watch may fail to receive radio signals depending on the reception conditions (weather, geographic locations,
radio disturbances such as tall buildings, and orientation of the watch). Refer to “APPROPRIATE PLACE TO KEEP
A RADIO-CONTROLLED WATCH"" on page 30.
ꢀꢀ
ꢀꢁ
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THE UNITED STATES (WWVB)
JAPAN (JJY)
Thereceptionrangefromeachtransmittingstationisapproximately1,000km(1,000kmradiusofeachstation).
The reception range from the transmitting station is approximately 1,ꢃ00 km (1,ꢃ00 km radius of
Fort Collins radio station). There are four time zones within the reception range.
*If the reception conditions are good, the watch may be able to receive radio signals outside the reception range.
1500 km
Ohtakadoya-yama
transmitting station
(40 KHz)
Hagane-yama
transmitting
station (60 KHz)
1000 km
1000 km
Fort Collins
* The watch may fail to receive radio signals depending on the reception conditions (weather, geographic locations,
radio disturbances such as tall buildings, and orientation of the watch). Refer to “APPROPRIATE PLACE TO KEEP
A RADIO-CONTROLLED WATCH" on page 30.
transmitting station
(60 KHz)
ꢀꢂ
ꢀꢃ
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MANUAL RECEPTION
It is possible to make the watch receive radio signals manually by keeping Button A pressed for
three seconds or longer.
If Button A is pressed during reception, the watch will stop receiving radio signals and time based
on the time before the reception attempt is displayed.
Preparation
During reception
Reception level display
When the watch has
a good chance of
Reception
procedure
completed
While receiving radio signals,
the watch hands move to display
the current reception level.
When the watch may
not be able to receive
radio signals
Approx.
2 to 12
successful reception
If the reception
is successful,
the watch will
display the
current time.
*2. About the date
minutes
*1. When the watch
is unable to receive
radio signals
A
○
Approx.
1 minute
The second hand points to H
(High: the 50- second position).
The second hand points to L
(Low: the 40- second position).
Place the watch where it can
easily receive radio signals.
Press and hold Button A for
three seconds or longer.
The second hand moves to
the 0-second position and
the watch automatically starts
receiving radio signals.
After
When the watch is placed
where it is unable to receive
radio signals
5 seconds
*1. Please note that, depending on the environment in which the watch is placed, it may not receive radio signals
successfully even though the second hand points to “H” or “L.” Displayed reception level should be treated as
a rough guide (refer to “APPROPRIATE PLACE TO KEEP THE WATCH” on page 30).
*2. After the watch receives a radio signal, when the date is incorrect even if the correct time is displayed, the
calendar may be out of the preliminary position (refer to “PRELIMINARY POSITION CHECKING AND SETTING
FOR THE CALENDAR” on pages 58-59).
The second hand points to N
(No: the 20- second position).
If the watch fails to receive radio signals,
time based on the time before
the reception attempt is displayed.
ꢀꢄ
ꢀꢅ
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HOW TO CHECK THE RECEPTION RESULT
The second hand moves to display the reception result, and then it moves to display which radio
signal the watch has received.
The result of the last reception attempt of either automatic or manual reception is displayed.
2. The second hand displays
the transmitting station
which radio signal the watch has
received for 3 seconds.
The second hand
resumes its normal
movement.
If the reception was successful,
the second hand points to Y
(Yes: the 10 second position).
T
A
○
1. The watch displays if the
reception is successful
or not for 5 seconds.
The second hand points to DCF77
(Germany’ s standard frequency)
at the 3 second position.
The second hand points to WWVB
(the United States’ standard frequency)
at the 43 second position.
The second hand points to JJY
(Japan’ s standard frequency)
at the 23 second position.
If the reception has failed,
the second hands points to N
(No: the 20 second position).
The second hand
resumes its normal
movement.
Press Button A once.
I
* If Button A is pressed while the second hand is moving to display the reception result, the reception result display
function is cancelled and the second hand resumes its normal movement.
ꢀꢆ
ꢀꢇ
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APPROPRIATE PLACE TO KEEP A RADIO-CONTROLLED WATCH
TO ENABLE THE WATCH TO RECEIVE RADIO SIGNALS EASILY
Place the watch where it can easily receive
CONDITIONS IN WHICH THE WATCH MAY BE UNABLE TO RECEIVE RADIO SIGNALS
radio signals.
The antenna for receiving
radio signals inside the
watch is at the 9 o’ clock
position.
Turning the antenna
toward the outside of the
w i n d o w e n a b le s t h e
watch to receive radio
signals more easily.
To enhance the reception of radio signals, do
not move the watch while it is receiving radio
signals.
- Inside a building, between
tall buildings, underground
- Close to overhead power lines,
TV stations, and train cables
The watch is unable to receive radio signals
outside a reception range.
- Close to home electrical
appliances or OA devices
- Close to furniture made of
steel, such as a steel desk
RADIO SIGNAL RECEPTION RANGE…pages 22-25
Whether the watch succeeds in receiving radio
signals or not depends on the weather or
receiving conditions.
Avoid putting the
watch in such places when
it receives radio signals.
- Close to construction sites
or in heavy traffic
-
Inside
a
vehicle, train,
ꢁ0
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airplane, etc.
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TIME ZONE ADJUSTMENT
HOW TO USE THE TIME ZONE ADJUSTMENT FUNCTION
WARNING
The watch can be set to local time in a different time zone easily by selecting a time zone. The
watch can receive the standard frequencies of Germany, the United States, and Japan to set the
precise time and date.
- The watch may display the incorrect time if it fails to receive radio signals properly
because of interference. The watch may fail to receive radio signals depending on the
location or reception conditions. In such a case, change the location of the watch.
- Radio signals can easily be received during nighttime hours due to its characteristics.
- The watch moves depending on the quartz movement (loss/gain: 15 seconds per month)
when it is unable to receive radio signals.
- The time signal transmission may be stopped during maintenance of the facilities of each
transmitting station or because of a lightning strike. In such a case, see each station’s
website for further information.
Outside the reception range
Step 1
No need for further operation
Selecting a time zone
Step 2
Websites of transmitting stations (as of June, 2006)
TIME ZONE DISPLAY...P36 - 39
HOW TO SET THE TIME ZONE
...P40 - 51
Within the reception range
Conduct radio signal reception
Germany: PTB
RADIO SIGNAL RECEPTION ...P20 - 21
RADIO SIGNAL RECEPTION RANGE ...P22 - 25
The receivable standard frequency
can be changed by selecting a time zone.
ꢁꢀ
ꢁꢁ
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WHAT IS A TIME ZONE?
TIME ZONE AND TIME DIFFERENCE
24 TIME ZONES AND TIME DIFFERENCES FROM UTC
Time zone means the region where the common standard time is used. There are ꢀꢂ time zones
around the world based on time differences from UTC (Universal Coordinated Time). In some
regions daylight saving time (DST) is adopted.
EUROPE
(DCF77 from Germany)
[What is UTC (Universal Coordinated Time)?]
UTC is the universal standard time coordinated through international agreement. It is used as the
official time around the world. UTC is determined by adding a leap second to GMT (Greenwich
Mean Time), which is determined through astronomical measurement, in order to keep the precise
time.
Date line
JAPAN(JJY)
THE UNITED
STATES (WWVB)
[What is summer time (DST)?]
Summer time is daylight saving time. Advancing the watch one hour to prolong daytime during
longer daylight hours in summer. Daylight saving time has been adopted in about 80 countries,
mainly in Europe and North America. The adoption and duration of daylight saving time vary
depending on the country.
ꢁꢂ
ꢁꢃ
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The arrow mark can be used
to set the time zone during
the summer time period.
While summer time is in effect, select
the time zone 1 hour ahead by
following the direction of the
arrow mark (clockwise).
TIME ZONE DISPLAY
T
Position that the second hand indicates
Time zone / Names of representative cities Time difference Receivable
(City with ★ mark: DST adopted)
from UTC
radio signal
Standard Time
48-second position
NEW YORK
New York★
Caracas
-5 hours
-4 hours
WWVB
WWVB
-
-
50-second position (10 o’ clock position) CARACAS
53-second position
55-second position (11 o’ clock position) RIO DE JANEIRO Rio de Janeiro★ -2 hours
RIO DE JANEIRO Rio de Janeiro★ -3 hours
58-second position
0-second position (12 o’ clock position) UTC/LONDON
3-second position PARIS/BERLIN
5-second position (1 o’ clock position) CAIRO
AZORES
Azores★
UTC/London★
Paris★/Berlin★ +1 hours
Cairo★
Moscow★
Dubai
-1 hour
0 hour
DCF77
DCF77
DCF77
-
-
-
+2 hours
+3 hours
+4 hours
+5 hours
[Time zone display]
8-second position
MOSCOW
A representative city in a certain time
zone is displayed. Refer to pages 34-35
for further information concerning
time zones.
10-second position (2 o’ clock position) DUBAI
13-second position
KARACHI
Karachi
[Summer time (DST)]
Daylight Saving Time
*If daylight saving time is in effect in the time zone within the radio signal reception range, the time zone
with “ ” mark which is 1 hour ahead can be selected to set the precise time. Either automatic or manual
*If daylight saving time is in effect in the time zone “RIO DE JANEIRO,” set the second hand at the 55
-second position, not to the “AZORES” at the 58-second position.
◎
reception is also available in these time zones if the watch is within the reception range (refer to “HOW TO
SET SUMMER TIME” on page 42).
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[Time zone display]
A representative city in a certain time
zone is displayed. Refer to pages 34-35
for further information concerning
time zones.
Position that the second hand indicates
Time zone / Names of representative cities Time difference Receivable
6
(City with ★ mark: DST adopted)
from UTC
radio signal
Standard Time
[Summer time (DST)]
15-second position (3 o’ clock position) DHAKA
18-second position
20-second position (4 o’ clock position) HONG KONG
Dhaka
Bangkok
Hong Kong
Tokyo
Sydney★
+6 hours
+7 hours
+8 hour
-
-
Daylight Saving Time
BANGKOK
JJY
JJY
JJY
-
23-second position
25-second position (5 o’ clock position) SYDNEY
28-second position NOUMEA
30-second position (6 o’ clock position) WELLINGTON
32-second position (6 o’ clock position) WELLINGTON
33-second position
35-second position (7 o’ clock position) HONOLULU
38-second position ANCHORAGE
40-second position (8 o’ clock position) LOS ANGELES
43-second position DENVER
45-second position (9 o’ clock position) CHICAGO
TOKYO
+9 hour
+10 hour
+11 hours
+12 hours
+13 hours
-11 hours
-10 hours
-9 hours
-8 hours
-7 hours
-6 hours
Nouméa
Wellington★
(Wellington)*
Midway Islands
Honolulu
Anchorage★
Los Angels★
Denver★
-
MIDWAY
-
-
-
While summer time is in
effect, select the time zone
WWVB
WWVB
WWVB
N
The arrow mark can be
used to set the time zone
during the summer time period.
1 hour ahead by following the
direction of the arrow mark (clockwise).
Chicago★
*If daylight saving time is in effect in the time zone within the radio signal reception range, the time zone
with “ ” mark which is 1 hour ahead can be selected to set the precise time. Either automatic or manual
**If daylight saving time is in effect in the time zone “WELLINGTON,” set the second hand at the 32 -second
position, not to the “MIDWAY” at the 33-second position.
◎
reception is also available in these time zones if the watch is within the reception range (refer to “HOW TO
SET SUMMER TIME” on page 42).
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HOW TO SET THE TIME ZONE
Select the time zone to set the watch to the local time in the desired area.
While summer time is in effect, select the time zone 1 hour ahead.
HOW TO SELECT THE TIME ZONE
The watch resumes
its normal movement
if it is left untouched
*While the date numerals
in the calendar window
are moving, the buttons
and crown cannot be
operated.
Press Button A or B to select a time zone.
T
T
for 10 seconds.
T
T
If the watch
is left
A
○
untouched for
10 seconds
After
6
6
6
6
10 seconds
Proceed to
the next operation
within 10 seconds.
The current time of
the selected time zone
is displayed.
The watch corrects
the date automatically
if necessary.
B
○
B
○
I
*Refer to “HOW TO
USE BUTTON B”
on page 8.
I
I
I
The second hand points to
the time zone currently selected.
When the button is pressed once,
the second hand
When the button is pressed once,
the second hand moves
back by one hour.
*Refer to
advances by one hour.
“TIME ZONE DISPLAY” on pages 36-39.
When the button is pressed, the hour and minute hands
move correspondingly with the second hand.
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HOW TO SET SUMMER TIME
SUMMER TIME AUTOMATIC CHANGE FUNCTION
Summer time is daylight saving time. Advance the
watch one hour to prolong the daytime during the
longer daylight hours in summer.
As long as your watch is used in an environment where German standard radio signals (DCFꢅꢅ)
can be continuously received, the time zone can automatically be changed by receiving the
standard radio signals indicating "entering summer time” or "returning to normal time from
summer time” to display the changed time.
While summer time is in effect, select the time zone 1 hour
ahead.
*Refer to “ In the case where the summer time change function cannot be automatically reset" on page 44.
Follow the direction of the arrow mark (clockwise) to
advance the second hand for the length of one arrow mark.
* Refer to “TIME ZONE DISPLAY” on pages 36-39.
* Refer to “HOW TO SELECT THE TIME ZONE” on pages
40-41.
In the case where a summer time change automatically functions
<Ex. 1>
In Germany, your watch is used in an environment where the reception state is good. (Automatic reception, etc., can
be made.)
In an environment where German standard radio
signals (DCFꢅꢅ) can be continuously received, SUMMER
TIME automatic change can be made (refer to“ SUMMER
TIME automatic change” ).
After automatically changing to summer time, reception was successful.
Your watch displays summer time for which 1 hour is added to normal time. Checking the time zone,
you find that it displays “CAIRO.”
* The time differences and use of daylight saving time in each
area are subject to change according to the governments of the
respective countries or regions.
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QUESTIONS AND ANSWERS ABOUT THE TIME ZONE ADJUSTMENT FUNCTION
Q: When the watch is moved to a different time zone, is the time automatically changed to the time
of the area?
<Ex. ꢀ>
During summer time in Germany, you used your watch with the time zone adjusted for “CAIRO.” As reception
failed and the time remained indicating summer time when summer time had ended, when manual reception was
attempted, reception was successful.
A: The watch will not be automatically set to the local time if it is just moved to a place in a
different time zone. Select the time zone where you are when you travel.
If you select the time zone, the watch is automatically set to the local time.
(Adjust the time zone by one hour units according to the original time.)
If the time zone is within the reception range of radio signals, you can leave the watch to receive
the radio signal to set it to the precise time.
The time indicates the correct time after summer time. Checking the time zone, you find that it
displays “PARIS/BERLIN.”
(The receivable standard frequency can be changed by selecting a time zone.)
In the case where a summer time change cannot be automatically reset
Q: Summer time information should be contained in a standard frequency. Isn’t it necessary to
set summer time manually if the time zone within the radio signal reception range is properly
selected?
<Ex.>
You move to Germany during summer time from an area that differs in time zone. After changing time zone and
selecting “PARIS/BELRIN,” reception was successful by manual reception; however, your watch did not display
summer time.
A: Some areas or countries in a time zone may not have adopted summer time. Therefore, the
watch is designed so that summer time can be manually selected. However, a summer time
automatic change can be made as long as your watch is used in an environment where German
standard radio signals (DCFꢅꢅ) can be continuously received.
In the case of summer time, select “CAIRO” not “PARIS/BELRIN.”
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EXAMPLES OF TIME ZONE ADJUSTMENT
Select the time zone "TOKYO” which belongs to the Japan Standard Time.
The watch can receive the standard frequency of Japan. Leave the watch to receive radio signals
to set it to the precise time.
IN AN AREA WITHIN THE RECEPTION RANGE ABROAD: ex. Japan (Tokyo)
*While the date numerals
The watch resumes
its normal movement
if it is left untouched
T
T
in the calendar window
are moving, the buttons
and crown cannot be
operated.
T
T
for 10 seconds.
A
○
If the watch
is left
untouched for
10 seconds
Radio
signal
recep-
tion
6
6
After
6
6
Refer
to
pages
20-21
10 seconds
Proceed to
the next operation
within 10 seconds.
B
○
The watch displays
the current time in Japan.
The watch automatically
corrects the date if necessary.
B
I
I
○
*Refer to “HOW TO
USE BUTTON B” on
page 8.
I
I
Press Button A or B
to select the time zone
“TOKYO.”
The hour and minute
hands start advancing
rapidly to set the watch
to the local time in Japan.
Press Button B
for 3 seconds
and release it to
enter the time zone
selection mode.
The second hand
points to the time zone
currently selected.
( “PARIS/BERLIN” is selected
in the figure above.)
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Select the time zone "HONOLULU” which belongs to the standard time in Hawaii.
Since Hawaii is outside the reception range, the watch cannot receive radio signals to set it to the
precise time automatically.
IN AN AREA OUTSIDE THE RECEPTION RANGE ABROAD: ex. Hawaii (Honolulu)
The watch resumes
its normal movement
if it is left untouched
*While the date numerals
in the calendar window
are moving, the buttons
and crown cannot be
operated.
T
T
T
T
for 10 seconds.
If the watch
is left
untouched for
10 seconds
A
○
After
6
6
6
6
10 seconds
Proceed to
the next
operation within
10 seconds.
The current time
in Hawaii is displayed.
The watch corrects
the date automatically
if necessary.
B
B
○
○
*Refer to “HOW TO
USE BUTTON B” on
page 8.
I
I
I
I
Press Button A or B
to select the time zone
“HONOLULU.”
The hour and minute hands
start advancing rapidly
to set the watch
The second hand
points to the time zone
currently selected.
( “PARIS/BERLIN” is selected
in the figure above.)
Press Button B
for 3 seconds
and release it to
enter the time zone
selection mode.
to the local time in Hawaii.
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Select the time zone of your own country. For example, select "PARIS/BERLIN” when
WHEN YOU RETURN FROM A COUNTRY THAT HAS A DIFFERENT TIME ZONE
The watch resumes
its normal movement
if it is left untouched
*While the date numerals
in the calendar window
are moving, the buttons
and crown cannot be
operated.
T
T
T
T
for 10 seconds.
If the watch
is left
untouched for
10 seconds
A
○
Radio
signal
recep-
tion
After
6
6
6
6
10 seconds
Refer
to
pages
20-21.
Proceed to
the next
operation within
10 seconds.
B
○
B
○
The watch displays
the current time in Germany.
The watch automatically
corrects the date if necessary.
*Refer to “HOW TO
USE BUTTON B”
on page 8.
I
I
I
I
Press Button A or B
to select the time zone
“PARIS/BERLIN.”
The hour and minute
hands start advancing
rapidly to set the watch
to the local time in Germany
Press Button B
for 3 seconds
and release it to
enter the time zone
selection mode.
The second hand
points to the time zone
currently selected.
( “TOKYO” is selected
in the figure above.)
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HOW TO MANUALLY SET THE TIME AND DATE
The watch moves depending on the quartz movement (loss/gain: 1ꢃ seconds per month). After
the manual time setting, if the watch successfully receives a time signal, the watch displays the
time based on the time information it receives.
MANUAL TIME SETTING
A
○
*Refer to “THE SCREW LOCK
TYPE CROWN” on page 9.
Pull out the crown to the
second click.
The second hand rotates
Press Button A to set the time.
Push the crown back in.
The watch resumes its
normal movement.
until it points to the 0
s e c o n d p o s i t i o n ( 1 2
o’ clock position) and
stops to enter the manual
time setting mode.
Each pressing of Button A advances the hour and
minute hands by one minute. If Button A is kept
pressed for one to two seconds, the hands advance
rapidly. The hands keep advancing if Button A is
released. Press Button A again to stop.
*The watch hands do not move if the crown is turned.
Pressing Button A advances the hands clockwise only.
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*When the date numerals are misaligned in the calendar window, the position of the date numerals can be
adjusted. Refer to “PRELIMINARY POSITION CHECKING AND SETTING FOR THE CALENDAR” on pages
58-59.
MANUAL DATE SETTING
A
○
*Refer to “THE SCREW LOCK
TYPE CROWN” on page 9.
Pull out the crown to the
first click.
The watch enters the date
setting mode while the
watch hands continue to
show the current time.
Press Button A to set the date.
After the date setting is
completed, push the
crown back in.
Each pressing of Button A advances the
date by one day. If Button A is kept
pressed for one to two seconds, the
date numerals advance rapidly. The
hands keep advancing if Button A is
released. Press Button A again to stop.
*The date numerals cannot be advanced or moved back by
turning the crown. Pressing of Button A only advances the
date. If Button A is kept pressed for one to two seconds,
the date advances rapidly until 31 days have advanced.
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ABNORMAL DISPLAY OR IMPROPER FUNCTION
* If the second hand moves at two-second or five-second intervals, the energy depletion forewarning
function should be activated; thus, it is not a malfunction (refer to“CHECKING THE CHARGING STATUS
BY THE MOVEMENT OF THE SECOND HAND” on page 12). The watch hands may rotate rapidly
because the automatic hand alignment function is activated; however, it is also not a malfunction (refer to
“AUTOMATIC HAND ALIGNMENT” on page 19).
HOW TO RESET THE BUILT-IN IC
When the watch shows an abnormal display or does not properly function, or it does not move
at one-second intervals even after being sufficiently charged, follow the instructions below to
reset the built-in IC. Then the watch will resume its normal operation.
After resetting of the built-in IC, be sure
to set the calendar to the preliminary
position.
*Refer to “THE SCREW
A
○
LOCK TYPE CROWN”
on page 9.
After the built-in IC is reset, the watch is
set to the time zone “PARIS/BERLIN.”
B
○
Pull out the crown
t o t h e s e c o n d
click.
The second hand
Press Button A and Button B
simultaneously for 3 seconds and
release.
After the second hand rotates a full
circle, the hour and minute hands
advance rapidly until they point to
the 12 o’ clock position and stop.
Therefore all watch hands are set
to the 12 o’ clock position and
stop.
Push the crown
b a c k i n . T h e
watch hands start
moving.
R e s e t o f t h e
b u i l t - i n I C i s
completed.
Operations after resetting the built-in IC
moves to the
0
① Set the calendar to the preliminary position … refer to
second position
( 1 2 o ’ c l o c k
position).
pages 58 to 59.
② Select the time zone (if necessary) …refer to pages 40 to
41.
③ Set the time by receiving radio signals … refer to pages
20 to 32.
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PRELIMINARY POSITION CHECKING AND SETTING FOR THE CALENDAR
If the date is incorrect after the built-in IC is reset or the watch succeeds to receive a proper radio
signal, the calendar may be out of the preliminary position.
*It is recommended to stop the date at “30”or “31” before setting it to ”1” in order to check the alignment of
the date numerals in the calendar window. After stopping the date at “30” or “31,” advance the date to ”1”
by pressing Button B.
The watch resumes its normal movement if it is left untouched for 10 seconds.
E a c h p r e s s i n g o f B u t t o n
advances the date by one day.
If Button A is kept pressed for one
to two seconds, the date advances
rapidly. The date keeps advancing
if Button A is released. Press
Button A again to stop.
A
*
If Button
A
is kept
pressed for one to two
s e c o n d s , t h e d a t e
advances rapidly until
31 days have advanced.
If the watch
is left
untouched for
10 seconds
A
○
A
○
Proceed to
the next
B
○
After
10 seconds
Press Button A or Button B
t o s e t t h e d a t e t o t h e
preliminary position “1.”
operation
within
*Refer to “HOW
TO USE
10 seconds.
BUTTON B”
on page 8.
P r e s s a n d h o l d
The hour, minute,
and second hands
s t o p . T h e d a t e
advances rapidly to
s h o w i t s c u r r e n t
preliminary position.
If “1” is shown in the
Button A and Button
B simultaneously for
three seconds or
longer.
calendar window, the
preliminary position of
the calendar is correct.
If “1” is not shown,
reset the calendar to the
preliminary position.
Each pressing of Button B slightly
advances the date. It should be
used for fine adjustment of the
position of the date numerals.
If Button B is pressed for one to
two seconds, the date advances
rapidly. Release Button B to stop.
T h e w a t c h
r e s u m e s i t s
normal movement
and the correct
date is displayed.
B
○
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SPECIFICATIONS
1
2
Frequency of crystal oscillator 32,768 Hz (Hz = Hertz ... Cycles per second)
Loss/gain (monthly rate) Less than 15 seconds (Except during automatic time setting, when worn on the wrist within
a normal temperature range between 5ºC and 35ºC.)
Operational temperature range Between -10ºC and +60ºC
3
4
Driving systems
Step motor (hour and minute hands)
Step motor (second hand)
Step motor (calendar)
5
6
Power source
Secondary battery, 1 piece
Duration of operation
Approximately 6 months (Fully charged, the Power Save is not activated)
*If the Power Save is activated after it is fully charged, the watch continues to
run for approximately one year and a half.
7
Time setting by receiving a radio signal
Automatic reception (2:00 AM, 3:00 AM, and 4:00 AM; attempts of reception depend on radio
wave receiving conditions.)
*After having received a radio signal, the watch moves depending
on the quartz movement until the next reception. Manual reception is also
possible.
8
IC (Integrated Circuit)
Oscillator, frequency divider and driving circuit C-MOS-IC: 3 pieces
*The specifications are subject to change without prior notice for product improvements.
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TROUBLESHOOTING
Trouble
Possible cause
Solution
The energy depletion forewarning function is activated.
If the second hand moves at two or five-second intervals
while you wear the watch everyday, the watch is in a
condition where it cannot get sufficient light, for instance,
the watch is concealed under a long sleeve shirt.
Hand
The second hand moves at
Refer to “STANDARD CHARGING TIME” on page 11 to recharge the watch.
Be careful not to conceal the watch under a sleeve.
movement two-second intervals.
When taking the watch off, place the watch in as bright a location as possible.
(Make sure that the watch temperature is always kept below 60 ºC.)
The second hand moves at
five-second intervals.
The power save function has been activated while the
second hand stopped pointing to the 15-second
position or 45-second position.
The stopped second hand
pointing to the 15-second
position or 45-second position
started moving.
Refer to “POWER SAVE FUNCTION” on pages 14-15.
If the watch moves at five-second intervals, immediately charge the watch.
For details, refer to “CHECKING THE CHARGING STATUS BY THE MOVEMENT OF THE
SECOND HAND” on page 12.
The power save function is automatically activated
when the watch is not exposed to adequate light for a
certain period of time, to limit energy consumption.
The automatic hand alignment function was activated.
When the hand positions deviate to display incorrect
time as a result of the influence of various external
sources, the watch automatically corrects the hand
alignment itself.
The watch hands advance
rapidly unless a button is
pressed. After the rapid
advancement is completed,
the watch resumes its normal
movement.
No operation is needed (this is not a malfunction).
For details, refer to “AUTOMATIC HAND ALIGNMENT” on page 19.
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Solution
Trouble
Possible cause
Reception
of radio
signals
The watch is unable to
receive radio signals.
The second hand points to
N (reception failed).
The watch was moved while it was receiving radio
signals.
Do not move the watch while it is receiving radio signals.
For details, refer to “TO ENABLE THE WATCH TO RECEIVE RADIO SIGNALS EASILY” on page 30.
The watch was left where radio signals were weak or
where it could not receive radio signals.
Place the watch where it can easily receive radio signals.
For details, refer to “CONDITIONS IN WHICH THE WATCH MAY BE UNABLE TO RECEIVE
RADIO SIGNALS” on page 31.
Transmitting stations may have stopped transmitting
time signals for some reasons.
See the website of each transmitting station for further information concerning the transmission of time
signals. The websites of transmitting stations are listed on page 32. For details, refer to “CONDITIONS
IN WHICH THE WATCH MAY BE UNABLE TO RECEIVE RADIO SIGNALS” on page 31.
The watch is set to the time zone outside of a radio
signal reception range.
Check the time zone that the watch is currently set for, and select the time zone where you want to set the watch.
For details, refer to “TIME ZONE ADJUSTMENT” on page 33.
Charging
the solar
battery
The stopped watch was
exposed to adequate light
for a longer time than “the
time required for fully
charging the watch, ”
h o w e v e r , i t d o e s n o t
r e s u m e i t s n o r m a l
o n e - s e c o n d i n t e r v a l
movements.
The light is too weak or the manner of lighting the watch has
been altered while the watch is being charged.
Charge the watch in an environment where the watch can be exposed to an adequate intensity of
light in a stable condition.
The built-in IC has fallen into an unstable condition.
Reset the built-in IC. For details, refer to “ABNORMAL DISPLAY OR IMPROPER FUNCTION” on
pages 56-57.
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Solution
Trouble
Possible cause
Place the watch where it can receive radio signals more easily.
Conduct manual reception if necessary.
For details, refer to “CONDITIONS IN WHICH THE WATCH MAY BE UNABLE TO RECEIVE
RADIO SIGNALS” on page 31 and “MANUAL RECEPTION” on pages 26-27.
Time
The watch temporarily gains The watch fails to receive radio signals properly as a
or loses time.
result of the influence of various external sources.
misalign-
m e n t o f
hand
position
When the watch returns to normal temperature, the condition will be corrected.
Conduct manual reception if necessary.
The watch has been left in extremely high or low
temperatures for a long time.
For details, refer to “MANUAL RECEPTION” on pages 26-27. If the watch hands are not set to current time
even after conducting manual reception, consult the retailer from whom the watch was purchased.
The time displayed on the
watch is several hours before
or ahead of the current time.
Check the time zone that the watch is currently set for, and select the time zone where you want
The watch may be set to a time in a different time
zone from the area where the watch is currently used.
to set the watch
.
For details, refer to “TIME ZONE ADJUSTMENT” on page 33.
The reception result display The hand positions were misaligned as a result of the
confirms successful reception influence of various external sources.
b u t t h e w r o n g t i m e i s
No crown or button operation is needed. Automatic hand alignment will be activated to correct the
hand positions.
For details, refer to “AUTOMATIC HAND ALIGNMENT” on page 19.
If the hand positions are not corrected automatically or if you want to adjust the hand positions
immediately, reset the built-in IC. For details, refer to “ABNORMAL DISPLAY OR IMPROPER
FUNCTION” on pages 56-57.
displayed.
The second hand is not
The second hand is out of the preliminary position as a
correctly positioned while in result of the influence of various external sources.
the reception result display or
reception level display.
If the hand positions are not corrected even after resetting the built-in IC, consult the retailer from
whom the watch was purchased.
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Trouble
Possible cause
Solution
Wrong
date
The reception result display The calendar is out of preliminary position.
confirms successful reception This happens when the calendar is out of preliminary
b u t t h e w r o n g d a t e i s position as a result of influence of various external
After checking whether the calendar is set to the preliminary position, perform the preliminary
position settings for calendar.
For details, refer to “PRELIMINARY POSITION CHECKING AND SETTING FOR THE CALENDAR”
on pages 58-59.
displayed.
sources or after the built-in IC is reset.
Crown
The crown or buttons cannot The stored electric power is running short causing the
Refer to “ENERGY DEPLETION FOREWARNING FUNCTION” on page 13 to charge the watch.
and button be operated.
operation
watch to move at two-second intervals or five-second
intervals.
Date numerals in the calendar window are moving right
after the various crown or button operations.
Wait until the date numerals in the calendar window stop.
After the date numerals stop, the crown and buttons can be operated.
I get lost in the middle of the --------------
setting procedures.
Leave the watch untouched for a while. The watch will resume its normal movement.
Then start the setting procedure from the beginning.
Others
Blur on the dial glass persists. Small amount of water has got inside the watch due to
deterioration of the gasket, etc.
Consult the retailer from whom the watch was purchased.
*For the solution of troubles other than the above, consult the retailer from whom the watch was purchased.
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