Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.
Keep the watch exposed to bright light
Bright Light
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Solar cell
• 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.Battery discharges in the dark.
Solar cell
(Converts light to
electrical power.)
Charge
Rechargeable battery
The electricity generated by the solar cell of the watch is
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stored by a built-in battery. Leaving or using the watch
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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.
• When you are not wearing the watch on your wrist,
position the face so it is pointed at a source of bright
light.
• You should try to keep the watch outside of your sleeve
as much as possible. Charging is reduced significantly if
the face is only partially covered.
Bright Light
Electrical
energy
All
LEVEL 1
functions
LEVEL 2
enabled
LEVEL 3
LEVEL 4
charge
Dis-
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
Some or all
functions
disabled
• The actual level at which some functions are disabled depends on the watch model.
• Frequent display illumination can run down the battery quickly and require charging.
The following guidelines give an idea of the charging time required to recover from a
single illumination operation.
Approximately 5 minutes exposure to bright sunlight coming in through a window
Approximately about 8 hours exposure to indoor fluorescent lighting
• Be sure to read “Power Supply” for important information you need to know
when exposing the watch to bright light.
If the display of the watch is blank...
If the display of the watch is blank, it means that the watch’s Power Saving function
has turned off the display to conserve power.
• See “Power Saving Function” for more information.
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
product or its malfunction.
About This Manual
• Depending on the model of your watch, display text
appears either as dark figures on a light background or
light figures on a dark background. All sample displays
in this manual are shown using dark figures on a light
background.
• Button operations are indicated using the letters shown
in the illustration.
• 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.
General Guide
• Press C to change from mode to mode.
• In any mode (except when a setting screen is on the display), press B to illuminate
the display for about one second.
Timekeeping Mode
Press C.
▲
Radio-controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly.
• This watch is designed to pick up the time calibration signals transmitted in Germany
(Mainflingen), England (Anthorn), the United States (Fort Collins), China (Shangqiu),
and Japan (Fukushima, Fukuoka/Saga).
• See the information under “Signal Reception Troubleshooting” if you experience
problems with time calibration signal reception.
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 City (the city where you normally will use the watch). For more
information, see “To specify your Home City”.
• When using the watch outside the areas covered by the time signal transmitters, you
will have to adjust the current time setting manually as required. See
and date manually” for more information about manual time settings.
• The U.S. time calibration signal can be picked up by the watch while in North
America. The term “North America” in this manual refers to the area that consists of
Canada, the continental United States, and Mexico.
• As of January 2009, China does not use Daylight Saving Time (DST). If China does
go to the Daylight Saving Time system in the future, some functions of this watch
may no longer operate correctly.
• Using this watch in a country covered by a time calibration that is different from the
countries it supports may result in incorrect time indication due to local application of
summer time, etc.
To specify your Home City
City code
Left dial
hand
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PM indicator Seconds
Hour : Minutes
1. In the Timekeeping Mode, hold down A for about five
seconds until the left dial hand points to T1 and the city
code flashes on the upper display. This is the setting
screen.
2. Press D (east) and B (west) to select the city code
you want to use as your Home City.
LIS, LON : Lisbon, London
MAD, PAR , ROM, BER, STO : Madrid, Paris, Rome,
ATH: Athens
MOW: Moscow
HKG, BJS, TPE : Hong Kong, Beijing, Taipei
SEL, TYO : Seoul, Tokyo
HNL: Honolulu
ANC: Anchorage
YVR, LAX : Vancouver, Los Angeles
YEA, DEN : Edmonton, Denver
MEX, CHI : Mexico City, Chicago
Berlin, Stockholm
“To set the time
World Time ModeStopwatch Mode
▲
Alarm ModeCountdown Timer Mode
MIA, YTO, NYC : Miami, Toronto, New York
YHZ : Halifax
YYT : St.Johns
3. Press A twice to exit the setting screen.
• Normally, your watch should show the correct time as soon as you select your Home
City code. 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.
• The watch will receive the time calibration signal automatically from the applicable
transmitter (in the middle of the night) and update its settings accordingly. For
information about the relationship between city codes and transmitters, see
“Important!” under “Time Calibration Signal Reception” and “Transmitters”.
• See the maps under “Approximate Reception Ranges” for information about the
reception ranges of the watch.
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal:
auto receive and manual receive.
• Auto Receive
With auto receive, the watch receives the time calibration signal automatically up to six
times a day (five times for the China signal). When any auto receive is successful, the
remaining auto receive operations are not performed. For more information, see
“About Auto Receive”.
• Manual Receive
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.
• Make sure the watch is facing the right way.
▲
▲
12 o’clock
or
▲
1
Operation Guide 5117
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
Inside or
among
buildings
• Signal reception normally is better at night than during the day.
• Time calibration signal reception takes from two to seven minutes, but in some
cases it can take as long as 14 minutes. Take care that you do not perform any
button operations or move the watch during this time.
• The time calibration signal the watch will attempt to pick up depends on its current
Home City code setting as shown below.
LIS, MAD, ROM, STO, MOW*
* The areas covered by the HNL, ANC, and MOW city codes are quite far from the
time calibration signal transmitters, and so certain conditions may cause problems
with signal reception.
• Calibration signal reception is disabled while a countdown timer operation is in
progress.
Inside a
Near household
vehicle
appliances,
office
equipment,
or a mobile
phone
Home City Code
LON, PAR , BER, ATH,
HKG, BJS
TPE, TYO, SEL
HNL*, ANC*, LAX, DEN,
CHI, NYC, YVR, YEA, MEX,
MIA, YTO, YHZ, YYT
Near a
construction
site, airport, or
other sources
of electrical
noise
The Anthorn signal is
receivable within this
area.
Japan Signals
500 kilometers
Fukuoka/Saga
1,000 kilometers
500 kilometers
Fukushima
1,000 kilometers
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
Signals are receivable in the Taiwan area when reception conditions are good.
5:00 am
Midnight
Midnight
1:00 am*
*
*
1:00 am*
2:00 am*
2:00 am*
3:00 am*
Changchun
Beijing
Shanghai
Hong Kong
Midnight
1:00 am*
*
1:00 am*
*
2:00 am*
2:00 am*
3:00 am*
3:00 am*
4:00 am*
1,500 kilometers
500 kilometers
Shangqiu
• Signal reception may not be possible at the distances that are futurer than those
noted below during certain times of the year or day. Radio interference may also
cause problems with reception.
Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers
(310 miles)
Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
Shangqiu (China) transmitter: 1500 kilometers (910 miles)
• Even when the watch is within the reception range of the transmitter, signal
reception will be impossible if the signal is blocked by mountains or other geological
formations between the watch and signal source.
• Signal reception is affected by weather, atmospheric conditions, and seasonal
changes.
About Auto Receive
The watch receives the time calibration signal automatically up to six times a day (five
times for the China signal). When any auto receive is successful, the remaining auto
receive operations are not performed. The reception schedule (calibration times)
depends on your currently selected Home City, and whether standard time or Daylight
Saving Time is selected for your Home City.
Your Home City
LON
Standard Time
LIS
Daylight Saving Time
PAR
Standard Time
BER
Daylight Saving Time
MAD
ROM
STO
ATH
Standard Time
Daylight Saving Time
Standard Time
MOW
Daylight Saving Time
China Signal
Chengdu
Auto Receive Start Times
123456
1:00 am
2:00 am
2:00 am
3:00 am
3:00 am
4:00 am
4:00 am
5:00 am
2:00 am
3:00 am
3:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight
3:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight
Midnight
1:00 am*
*
4:00 am
5:00 am
5:00 am
Midnight
Midnight
*
1:00 am*
*
1:00 am*
2:00 am*
Your Home City
HKG
Standard Time
BJS
TYO
Standard Time
TPE
SEL
HNL
Standard Time and
ANC
Daylight Saving Time
LAX
DEN
CHI
NYC
YVR
YEA
MEX
MIA
YTO
YHZ
YYT
Note
• When a calibration time is reached, the watch will receive the calibration signal only
if it is in either the Timekeeping Mode or World Time Mode. Reception is not
performed if a calibration time is reached while you are configuring settings.
• Auto receive of the calibration signal is designed to be performed early in the
morning, while you sleep (provided that the Timekeeping Mode time is set correctly).
Before going to bed for the night, remove the watch from your wrist, and put it in a
location where it can receive the signal easily.
• The watch receives the calibration signal for two to 14 minutes everyday when the
time in the Timekeeping Mode reaches a calibration time. Do not perform any button
operation within 14 minutes before or after the calibration times. Doing so can
interfere with correct calibration.
• Remember that reception of the calibration signal depends on the current time in
your Home City, as kept in the Timekeeping Mode.
To perform manual receive
Receiving
R (READY) W (WORK)
Receive successful
Receive failed
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press any
button.
To check the latest signal reception results
In the Timekeeping Mode, press A to view the last successful receive time and date.
Press A again to return to the previous screen.
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
I can’t
receive a
time
calibration
signal.
• You performed some button operation
• The watch is not in the Timekeeping
• The watch is in a location where the
• A countdown timer operation is in
• Radio interference is often present
*
Time setting
is incorrect
following
signal
reception.
• For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Atomic Timekeeping Precautions”.
• If the time is one hour off, the DST
• The Home City code setting is not
• The home position of the hands is off.
1:00 am
Midnight
Midnight
1. Place the watch on a stable surface so its 12 o’clock
side is facing towards a window.
2. In the Timekeeping Mode, hold down A for about two
seconds until the watch beeps.
3. The digital display will go blank, and the left dial hand
will move to R (READY). This indicates that the watch is
getting ready for time calibration signal reception.
• See the information under “Signal Reception
Troubleshooting” if you experience problems.
• The left dial hand will move to W (WORK) and stay there
while actual reception is in progress.
• If signal reception is unstable during reception, the left
dial hand may move between W (WORK) andR (READY).
• The hour and minute hands continue to keep time
normally.
• Time calibration signal reception takes from two to
7 minutes, but in some cases it can take as long as
14 minutes. Take care that you do not perform any
button operations or move the watch during this time.
• When signal receive operation is successful, GET
appears on the upper display and the lower display
shows the time and date of the successful operation.
The watch will adjust its time setting in accordance to
with the information provided by the signal.
• The watch will return to the Timekeeping Mode if you
press A or if you do not perform any operation for
about one or two minutes.
• ERR will appear on the upper display if the receive
operation is not successful. The watch will not adjust its
time setting in this case. Press A to return to the
Timekeeping Mode.
Date
Probable CauseProblemWhat you should do
during the auto receive operation.
Mode or World Time Mode.
signal cannot be received for some
reason.
progress.
during the day time, which can
interfere with calibration signal
reception.
setting may be incorrect.
correct for the area where you are
using the watch.
Auto Receive Start Times
123456
2:00 am
3:00 am
4:00 am
5:00 am
1:00 am
2:00 am
3:00 am
4:00 am
5:00 am
1:00 am
2:00 am
3:00 am
4:00 am
5:00 am
*Next day
▲
▲
Hour : Minutes
• Perform manual signal
receive at night or wait until
the next auto signal receive
operation is performed.
• Enter the Timekeeping
Mode or World Time Mode
and try again.
• Enter the Countdown Timer
Mode and stop the
countdown.
• Check to make sure the
watch is in a location where
it can receive the signal.
• Change the DST setting to
Auto DST.
• Select the correct Home
City code.
• Enter the home position
adjustment mode and adjust
the home position.
2
Operation Guide 5117
Start Time
(Minutes)
Auto-Repeat
On/Off
C
World Time
City code
Current time in
selected city
• All of the operations in this section are performed in the World Time Mode, which
you enter by pressing C.
To view the current time in another time zone
In the World Time Mode, use D to scroll through available city codes (time zone).
Holding down the button scrolls at high speed.
• When the city code (time zone) you want is selected, you can press A to display
the date. After about one second, the watch will resume regular timekeeping.
To toggle a city code time between Standard Time and Daylight Saving Time
DST indicator
Swapping your Home City and World Time City
You can use the procedure below to swap your Home City and World Time city. This
changes your Home City to your World Time city, and your World Time city to your
Home City. This capability can come in handy when you frequently travel between two
cities in different time zones.
• If your current World Time city supports receipt of a time calibration signal, making it
your Home City enables calibration signal reception.
• For information about which cities support time calibration signal reception, see “To
specify your Home City.
To swap your Home City and World Time city
1. In the World Time Mode, use D to select the World Time city you want.
2. Hold down A and B until the watch beeps.
• This will make the World Time city (which you selected in step 1), your Home City. At
the same time, it changes the Home City you had selected prior to step 2 your World
Time city.
• After swapping the Home City and World Time city, the watch stays in the World
Time Mode with the city that was selected as the Home City prior to step 2 now
displayed as the World Time city.
World Time shows the current time in 48 cities (29 time
zones) around the world. A simple operation swaps your
Home City with the currently selected World Time city.
• The times kept in the World Time Mode are
synchronized with the time being kept in the
Timekeeping Mode. If you feel that there is an error in
any World Time Mode time, check to make sure you
have the correct city selected as your Home City. Also
check to make sure that the current time as shown in
the Timekeeping Mode is correct.
• Select a city code in the World Time Mode to display the
current time in any particular time zone around the
globe. See the “City Code Table” for information about
the UTC offset settings that are supported.
Press A.
▲
One second
DateHour : Minutes Seconds
1. In the World Time Mode, press D to display the city
code (time zone) whose Standard Time/Daylight Saving
Time setting you want to change.
2. Hold down A for about three seconds to toggle
between Daylight Saving Time ( DST indicator
displayed) and Standard Time (DST indicator not
displayed).
• The DST indicator is shown on the World Time Mode
screen while Daylight Saving Time is turned on.
Stopwatch
Stopwatch hand
Hours
SPL
indicator
• Exiting the Stopwatch Mode while a split time is frozen on the display clears the split
• All of the operations in this section are performed in the Stopwatch Mode, which you
1/100 second
Minutes
Seconds
time and returns to elapsed time measurement.
enter by pressing C.
To measure times with the stopwatch
Elapsed Time
D
Start
Split Time
D
StartSplit
Two Finishes
D
Start
The stopwatch lets you measure elapsed time, split times,
and two finishes.
• The digital display range of the stopwatch is 23 hours,
59 minutes, 59.99 seconds.
• The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it.
• The stopwatch hand will perform one high-speed
rotation during the first second of an elapsed time
measurement operation. Then it will indicate the
seconds during the first minute of the operation. After
that, it will indicate minutes. Whenever an elapsed time
operation is stopped, the stopwatch hand will move to
the current seconds count.
• The stopwatch measurement operation continues even
if you exit the Stopwatch Mode.
D
➤➤➤
StopRe-startStop
A
➤➤➤
(SPL indicator
displayed)
A
➤➤➤
Split
First runner
finishes.
Display time of
first runner.
D
A
Split releaseStop
D
Stop
Second runner
finishes.
D
D
A
Split release
Display time of
second runner.
A
➤
Clear
A
➤
Clear
A
➤
Clear
Countdown Timer
Start time (minutes)
Minutes
Seconds
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
• When the end of the countdown is reached and auto-repeat is turned off, the alarm
sounds for 10 seconds or until you stop it by pressing any button. The countdown
time is automatically reset to its starting value after the alarm stops.
• When auto-repeat is turned on, the countdown will restart automatically without
pausing when it reaches zero. The alarm sounds to signal when the countdown
reaches zero. The countdown is repeated up to eight times, and then stop.
• The number of the current repeat (1 to 8) is shown in the lower display.
• The countdown timer measurement operation continues even if you exit the
Countdown Timer Mode.
• To stop a countdown timer operation completely, first pause it (by pressing D), and
then press A. This returns the countdown time to its starting value.
To configure countdown start time and auto-repeat settings
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Start time (minutes)
3. Perform the following operations, depending on which setting is currently selected
on the display.
• While the start time setting is flashing, use D (+) and B (–) to change it.
• While the auto-repeat on/off setting (
D to toggle auto-repeat on (
4. Press A to exit the setting screen.
• The auto-repeat on indicator (
screen while this function is turned on.
• Frequent use of auto-repeat and the alarm can run down battery power.
You can set the countdown timer within a range of one
minute to 60 minutes. An alarm sounds when the
countdown reaches zero.
• You also can select auto-repeat, which automatically
restarts the countdown from the original value you set
whenever zero is reached.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
C.
1. While the countdown start time is on the display in the
Countdown Timer Mode, hold down A for about three
seconds until the minute setting of the countdown start
time starts to flash, which indicates the setting screen.
• If the countdown start time is not displayed, use the
procedure under “To use the countdown timer” to
display it.
2. Press C to move the flashing in the sequence shown
below, and select the setting you want to change.
or ) is flashing on the display, press
) and off ().
) is displayed on the Countdown Timer Mode
Alarms
Alarm number
Alarm time
(Hour : Minutes)
To set an alarm time
2. After you select an alarm, hold down A for about three seconds until the hour
setting of the alarm time starts to flash, which indicates the setting screen.
• This operation turns on the alarm automatically.
3. Press C to move the flashing between the hour and minute settings.
4. While a setting is flashing, use D (+) and B (–) to change it.
5. Press A to exit the setting screen.
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in. In the case of the snooze alarm, the alarm operation is performed a total
of seven times, every five minutes, until you turn the alarm off.
• Alarm and Hourly Time Signal operations are performed in accordance with the
current time in your Home City, as kept in the Timekeeping Mode.
• To stop the alarm tone after it starts to sound, press any button.
• Performing any one of the following operations during a 5-minute interval between
snooze alarms cancels the current snooze alarm operation.
Displaying the Timekeeping Mode setting screen
Displaying the
When an alarm is turned on, the alarm tone sounds when
the alarm time is reached. One of the alarms is a snooze
alarm, while the other four are daily alarms.
You also can turn on an Hourly Time Signal that causes
the watch to beep twice every hour on the hour.
• There are five alarm screens numbered
and for the daily alarm, a snooze alarm
screen indicated by
screen is indicated by
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C.
1. In the Alarm Mode, use D to scroll through the alarm
screens until the one whose time you want to set is
displayed.
• To set a daily alarm, display an alarm screen ,
, and . To set the snooze alarm,
display the
is the hourly time signal setting.
•
• The snooze alarm repeats every five minutes.
. The Hourly Time Signal
.
screen.
setting screen
, ,
3
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