Casio Clock Radio MO0905 A User Manual

MO0905-A  
Operation Guide 5007  
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.  
This watch does not have a city code that corresponds to the UTC offset of  
–3.5 hours. Because of this, the radio-controlled atomic timekeeping function  
will not display the correct time for Newfoundland, Canada.  
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.  
Keep the watch exposed to bright light  
The electricity generated by the solar cell of the watch is  
Bright light  
l
l
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.  
l
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.  
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  
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.  
Button operations are indicated using the letters shown  
Stopwatch  
in the illustration.  
second hand  
Hour hand  
Each section of this manual provides you with the  
information you need in order to perform operations in  
each mode. Further details and technical information  
can be found in the “Reference” section.  
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.  
24-hour  
hand  
Battery charges in the light.  
Solar cell  
Battery discharges in the dark.  
Minute  
hand  
Date  
(Converts light to  
electrical power.)  
Upper right  
dial hand  
Bright light  
Second hand  
Electrical  
energy  
All  
functions  
enabled.  
LEVEL 1  
LEVEL 2  
LEVEL 1  
LEVEL 2  
Dis-  
charge  
Some  
functions  
disabled.  
Charge  
Rechargeable battery  
Alarm Mode  
Timekeeping Mode  
General Guide  
Press D.  
(When the stopwatch is  
reset to all zeros.)  
Manual Receive  
Receive Status Check  
Press C.  
Hold down A for  
about two seconds.  
Stopwatch Mode  
L
Press C.  
Press C.  
L
Press A.  
Press any button.  
World Time Mode  
Countdown Timer Mode  
Transmitter Change  
Time/Date Adjustment  
Timekeeping Mode  
Press B or D.  
Hold down A  
for about five seconds.  
Press C.  
Press A.  
Whenever you enter the Timekeeping, Countdown Timer, World Time, or Alarm  
Mode, the hands of the watch move to the applicable time for that mode. Even if the  
hands are moving, you can press C to move to another mode (except for the  
Stopwatch Mode), if you want. Note, however, that all other buttons are disabled  
while the hands are moving.  
Radio-controlled Atomic Timekeeping  
This watch receives a time calibration signal and updates its time setting accordingly.  
Supported time calibration signals: Germany (Mainflingen), England (Anthorn),  
United States (Fort Collins), Japan (Fukushima or Fukuoka/Saga)  
See the information under “Signal Reception Troubleshooting” if you experience  
problems with time calibration signal reception.  
For full information on city codes, see the “City Code Table”.  
German/U.K. Signal  
City  
Code  
Japan Signal  
City  
Code  
U.S. Signal  
City  
Code  
City  
Code  
DEN Denver  
CHI Chicago  
NYC New York  
City Name  
City Name  
City Name  
City Name  
LON London  
PAR Paris  
ATH Athens  
HKG Hong Kong  
TYO Tokyo  
HNL Honolulu  
ANC Anchorage  
LAX Los Angeles  
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.  
In addition to the above, you also can select city codes that are outside the ranges  
of the time calibration signal transmitters supported by this watch.  
Note that this watch does not have a city code that corresponds to Newfoundland.  
3. After the Home City setting is the way you want, press A to return to the  
Timekeeping Mode.  
Normally, your watch should show the correct time as soon as you specify your  
Home City code. If it does not, it should adjust automatically after the next auto  
receive operation.You also can perform manual receive or you can set the time  
manually.  
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.  
The first thing you should do after purchasing this watch is to specify your  
Home City, which is 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 “Timekeeping”  
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.  
To specify your Home City  
1. In the Timekeeping Mode, hold down A for about five  
seconds until the watch beeps twice.  
Daylight SavingTime (DST)  
The stopwatch second hand will move to the city code  
of the currently selected Home City. This is the city  
code setting mode.  
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.  
The second hand will stop at “0”.*  
The time calibration signals transmitted from Mainflingen (Germany), Anthorn  
(England), or Fort Collins (the United States) 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 signals.  
Though the time calibration signal transmitted by the Fukushima and Fukuoka/Saga,  
Japan transmitters include summer time data, summer time currently is not  
implemented in Japan (as of 2007).  
The default DST setting is Auto DST (AT/AUTO) whenever you select LON, PAR,  
ATH, ANC, LAX, DEN, CHI, NYC, or TYO as your Home City code.  
If you experience problems receiving the time calibration signal in your area, it  
probably is best to switch between Standard Time and Daylight Saving Time  
(summer time) manually. For more information, see “To set the time and date  
manually”.  
* Some models show “60” instead of “0”.  
2. Use D to move the stopwatch second hand to the city  
code you want to use as your Home City.  
Each press of D causes the stopwatch second hand  
to advance clockwise to the next city code.  
Time calibration signal reception is supported when  
any one of the city codes shown in the table below is  
selected as your Home City.  
City code  
Stopwatch  
second hand  
1
 
Operation Guide 5007  
Stopwatch  
The stopwatch lets you measure elapsed time.  
Countdown Timer Examples  
Countdown start time: 10 minutes  
Stopwatch second hand  
When you enter the Stopwatch Mode, the stopwatch  
1/20 second hand and the upper right dial hand move  
to 0.  
Countdown  
End Beeper  
You can start elapsed time measurement with the  
stopwatch while the watch is in the Stopwatch Mode or  
the Timekeeping Mode.  
Start Time  
Reset Time  
Progress Beeper  
The display range of the stopwatch is 59 minutes, 59.95  
seconds.  
10'00"  
5'00"  
4'00"  
3'00"  
2'00"  
1'00"  
0'30" 0'10" 0'00"  
The stopwatch continues to run, restarting from zero  
after it reaches its limit, until you stop it.  
You cannot switch to another mode while a stopwatch  
elapsed time operation is in progress.  
Upper right  
dial  
0'10" 0'09" 0'08" 0'07" 0'06" 0'05" 0'04" 0'03" 0'02" 0'01"  
(stopwatch  
minute) hand  
Stopwatch 1/20  
second hand  
Using the Countdown Timer  
To start an elapsed time operation while in the Stopwatch Mode  
1. In the Timekeeping Mode, press D to enter the Stopwatch Mode.  
2. In the Stopwatch Mode, press B to start elapsed time measurement.  
3. Press B to stop elapsed time measurement.  
You can restart and stop elapsed time measurement as many times as you like by  
pressing B.  
The 1/20 second hand rotates during the first 60 seconds only, and then stops.  
Whenever elapsed timing is stopped (by pressing B), the 1/20 second hand  
jumps to the 1/20 second indication (which is kept internally).  
4. Check the elapsed time.  
The upper right dial and second hands move counterclockwise during a countdown  
operation. The upper right dial hand moves every 30 seconds of the countdown, and  
one revolution represents 30 minutes.  
Second hand  
30 minutes  
25 minutes  
5 minutes  
After you are finished measuring elapsed time, press D to reset the stopwatch to all  
zeros. The stopwatch will reset to all zeros even if you press D while elapsed time  
measurement is in progress.  
To return to the Timekeeping Mode, press D while the stopwatch is reset to all  
zeros.  
20 minutes  
10 minutes  
15 minutes  
Upper right  
dial hand  
To start an elapsed time operation while in the Timekeeping Mode  
1. In the Timekeeping Mode, press B to start elapsed time measurement.  
Elapsed time measurement will start internally when you press B, but timing will  
not appear for about one second.  
Hand movement  
during a countdown  
Upper right dial  
countdown minute scale  
When the countdown reaches zero, the watch starts a count up elapsed time  
operation in one-second increments. The upper right dial and second hands move  
clockwise during an elapsed time operation. The upper right dial hand moves every  
minute of the elapsed time operation, and one revolution represents 60 minutes.  
The elapsed time operation will not start if you press B in the Timekeeping Mode  
while either of the following conditions exists.  
While an alarm is sounding  
While the watch is changing from one date to the next (at midnight)  
2. Press B to stop elapsed time measurement.  
60 minutes  
You can restart and stop elapsed time measurement as many times as you like by  
pressing B.  
50 minutes  
10 minutes  
The 1/20 second hand rotates during the first 60 seconds only, and then stops.  
When elapsed time measurement is stopped (by pressing B), the 1/20 second  
hand jumps to the 1/20 second indication (which is kept internally).  
3. Check the elapsed time.  
After you are finished measuring elapsed time, press D to reset the stopwatch to all  
zeros. The stopwatch will reset to all zeros even if you press D while elapsed time  
measurement is in progress.  
40 minutes  
20 minutes  
30 minutes  
Upper right dial  
elapsed time minute scale  
Elapsed time operation  
hand movement  
To return to the Timekeeping Mode, press  
D
while the stopwatch is reset to all zeros.  
The elapsed time operation will continue until you stop it. Note, however, that only  
minutes are indicated by the upper right dial hand. There is not indication of the hour  
to let you know how many revolutions the upper right dial hand has made.  
Countdown Timer  
To use the countdown timer  
Second hand  
You can set the countdown start time within a range of  
one minute to 30 minutes. The watch has a preset “reset  
time” of five minutes. Pressing a button resets the  
countdown start time to five minutes. A progress beeper  
keeps you informed of the progress of the countdown. An  
alarm sounds when the timer reaches zero, and a count  
up elapsed time operation starts. All of this makes the  
countdown timer a useful tool for yacht racing.  
Whenever you enter the Countdown Timer Mode, the  
upper right dial hand initially will move to the TMR  
position. After about one second, the upper right dial  
hand will move to the countdown start time (minutes)  
and stop there.  
Press B while in the Countdown Timer Mode to start the  
countdown timer.  
Press B while a countdown operation is in progress to  
pause it. Press B again to resume the countdown.  
To stop a countdown operation completely, first pause it  
(by pressing B), and then press D. This will return the  
countdown time to its starting value.  
You also can perform the above operations to pause and  
restart the elapsed time operation after it starts.  
You will not be able to switch to another mode while a  
countdown is in progress.  
L Upper right  
dial hand  
To set the countdown start time  
In the Countdown Timer Mode, the timekeeping second  
hand points straight down (6 o’clock position).  
1. In the Countdown Timer Mode, press D to reset to the  
initial countdown start time (indicated by the upper right  
dial hand).  
2. Press A to advance the hand by one minute.  
Keep pressing A until it is at the start time you want.  
Holding down A at this time will move the hand at high  
speed. To stop high-speed hand movement, press any  
button.  
Timekeeping  
second hand  
Countdown timer  
minute hand  
When you enter the Countdown Time Mode, the upper right dial hand initially will  
point to the currently set countdown start time.  
The initial factory default setting for the countdown start time is 10 minutes.  
For details about the progress beeper, see “Progress Beeper”.  
All of the operations in this section are performed in the Countdown Timer Mode.  
When setting the countdown start time, remember that  
one revolution of the upper right dial hand represents 30  
30 minutes  
Countdown Timer Beeper Operations  
minutes.  
25  
5
To set a countdown start time of 30 minutes, move the  
upper right dial hand to 0 (or 60).  
The watch beeps at various times during a countdown so you can keep informed  
about the countdown status without looking at the display. The following  
describes the types of beeper operations the watch performs during a countdown.  
minutes  
minutes  
See the following section for information about resetting  
the countdown start time to 5 minutes while a  
countdown is in progress.  
Countdown End Beeper  
20  
10  
The watch beeps each second of the final 10 seconds before a countdown  
reaches zero, and at zero. The first five beeps (seconds 10 through 6) are lower  
pitched than the final five beeps (seconds 5 through 1).The watch emits a longer  
beep to signal when the countdown reaches zero.  
minutes  
minutes  
15 minutes  
To reset the countdown to the reset time (5 minutes)  
While a countdown is in progress or paused in the Countdown Timer Mode, press A  
once.  
This will cancel the ongoing countdown and cause the upper right dial hand to move  
to 5 and stop there. This will also cause the stopwatch second hand to move to 0.  
At this time you could use the procedure under “To set the countdown start time” to  
change the start time setting.  
The countdown end beeper always sounds and cannot be turned off.  
Progress Beeper  
The progress beeper sounds at the 5, 4, 3, 2, and 1-minute point, and 30-second  
point of the countdown.  
If you set a countdown start time of 2 to 5 minutes, the progress beeper will start to  
sound after the first minute is counted down. If you set a countdown start time of 3  
minutes, for example, the progress beeper will start to sound when the countdown  
reaches the 2-minute point.  
If you set a countdown start time of 1 minute, the progress beeper will sound once  
when the countdown reaches the 30-second point.  
The progress beeper always sounds and cannot be turned off.  
3
 
Operation Guide 5007  
World Time  
Adjusting the Home Positions  
The World Time Mode shows you the current time in 29  
cities (29 time zones) around the world. A simple  
operation swaps your Home City with the currently  
selected World Time city.  
When you enter the World Time Mode, the stopwatch  
second hand will move automatically to the city code  
that is currently selected as the World Time city. At the  
same time, the hour and minute hands will move to the  
current time in that city.  
The upper right dial hand shows whether or not Daylight  
Saving Time (summer time) is turned off for the currently  
selected city code.  
If the current time shown for a city is wrong, check your  
Home City settings and make the necessary changes.  
All of the operations in this section are performed in the  
World Time Mode.  
If the time and date settings are wrong even after the time calibration signal is  
Current time (hour) in  
the currently selected  
World Time city  
received normally, use the following procedure to adjust their home positions.  
To adjust the home positions  
1. In the Timekeeping Mode, as you hold down A, hold  
City code  
24-hour  
hand  
Stopwatch second hand  
down C for about three seconds until the watch beeps.  
This indicates that the watch is in the time and date  
home position adjustment mode.  
First is timekeeping second hand and stopwatch  
second hand home position adjustment.  
If the timekeeping second hand moves to “0”, it is in  
the correct home position. If it doesn’t, use D to  
move the timekeeping second hand to “0”.  
The stopwatch second hand is also in the proper  
Timekeeping  
home position if it moves to 12 o’clock. If it doesn’t,  
press B to move it to 12 o’clock.  
second hand  
Minutes  
Correct timekeeping second  
hand and stopwatch second  
hand home positions  
2. After confirming that the timekeeping second hand and  
stopwatch second hand are both at the proper home  
positions, press C.  
This will switch to hour hand and minute hand home  
position adjustment.  
Upper right  
dial hand  
Seconds  
Minute hand  
Hour hand  
To view the time in another city  
In the World Time Mode, use D to move the stopwatch second hand to the city code  
of the city you want to select as the World Time city.  
The hour hand, minute hand, 24-hour hand, and date display will change  
automatically to the applicable settings for the currently selected city code.  
All buttons (except for C for changing modes) are disabled while the hands and  
date display are changing.  
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 D (+) and B (–) to  
move all three hands to their proper home positions.  
The 24-hour hand moves in accordance with the hour,  
minute, and second settings. As you set the time, take  
care to ensure that the 24-hour hand also is at the  
correct position.  
3. After confirming that the hour and minute hands are in  
the correct home positions, press C. This will advance  
to upper right dial hand home position adjustment.  
The upper right dial hand is in the correct home  
position if it is pointing at 0 (or 60). If it isn’t, use  
D (+) and B (–) to move the hand to 0 (or 60).  
4. After confirming that the upper right dial hand is in the  
correct home position, press C. This will advance to  
date home position adjustment.  
The watch will beep if the city code you select is your current Home City.  
For full information on city codes, see the “City Code Table”.  
To toggle a city code time between Standard Time and Daylight Saving Time  
24-hour hand  
Correct hour and minute  
hand home position  
1. In the World Time Mode, use D to select the city code  
Upper right dial hand  
whose Standard Time/Daylight Saving Time setting you  
want to change.  
Upper right dial hand  
2. Hold down A for about three seconds until the watch  
beeps. This will cause the upper right dial hand to  
toggle between ON (Daylight Saving Time) and OFF  
(Standard Time).  
Note that you cannot switch between Standard Time and  
Daylight Saving Time while UTC is selected as the city  
code.  
The date is in the correct home position if it shows “1”.  
If it doesn’t, use D (+) and B (–) to change the date  
to “1”.  
Note that the Standard Time/Daylight Saving Time  
L Hold down  
setting affects only the currently displayed city code.  
A for three  
Other city codes are not affected.  
L
seconds.  
Correct upper right dial  
hand home position  
Pressing C here will return to the timekeeping  
second hand and stopwatch second hand home  
position adjustment in step 1 of this procedure.  
5. Press A to return to the Timekeeping Mode.  
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.  
The Standard Time/Daylight Saving Time setting of your  
Home City can be changed in the Timekeeping Mode  
only. See “To set the time and date manually” for more  
information.  
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 travel frequently between two  
cities in different time zones.  
Date  
Correct date home position  
If your current World Time city supports receipt of a time calibration signal, making it  
your Home City enables calibration signal reception.  
Timekeeping  
To swap your Home City and World Time city  
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.  
Stopwatch  
Hour hand second hand  
1. In the World Time Mode, use D to select the World Time city you want.  
2. Hold down B for about three seconds 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 will change the Home City you had selected prior to step 2 to your  
World Time city.  
24-hour  
hand  
Minute  
hand  
To set the time and date manually  
1. In the Timekeeping Mode, hold down A for about five  
seconds until the watch beeps twice.  
The stopwatch second hand will move to the city code  
of the currently selected Home City. This is the city  
code setting mode.  
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.  
Alarm  
The second hand will stop at “0”.*  
When the alarm is turned on, the alarm sounds when the  
alarm time is reached.  
* Some models show “60” instead of “0”.  
2. Use D to change the Home City setting.  
For full information on city codes, see the “City Code  
Table”.  
Alarm time (minute)  
Upper right  
dial  
Timekeeping  
second hand  
The upper right dial hand points to AL while the watch is  
in the Alarm Mode. The stopwatch second hand points  
to the current alarm on (ON)/off (OFF) setting, while the  
hour, minute, and 24-hour hands indicate the current  
alarm time setting.  
(day of the  
week) hand  
Date  
3. Use B to cycle through the DST settings in the sequence shown below.  
All of the operations in this section are performed in the  
Alarm Mode.  
Auto DST  
(AT/AUTO)  
DST off (OFF)  
DST on (ON)  
To set an alarm time  
1. In the Alarm Mode, hold down A for about three  
seconds until the watch beeps. This indicates it is in the  
Auto DST (AT/AUTO) can be selected only while LON, PAR, ATH, HNL, ANC,  
LAX, DEN, CHI, NYC, HKG, or TYO is selected as the Home City code. For more  
information, see “Daylight Saving Time (DST)”.  
Even after you change the DST setting, you can still use D to select a different  
Home City code if you want.  
24-hour  
hand  
Mode  
indicator  
setting mode.  
The stopwatch second hand will move to ON (alarm  
on) at this time.  
Alarm time (hour)  
4. After the Home City and DST settings are the way you want, press C.  
This will cause the watch to beep, and the stopwatch second hand and upper  
right dial hand to move to their 12 o’clock positions.This is the time setting mode.  
5. Use D (+) and B (–) to change the time (hour and minute) setting.  
As you set the time, take care to ensure that the 24-hour hand also is at the  
correct position.  
2. Use D (+) and B (–) to change the alarm time setting.  
Each press of either button moves the hands one-minute.  
3. After setting the alarm time, press A to exit the setting mode.  
Setting the alarm time causes the alarm to turn on automatically.  
As you set the alarm time, take care to ensure that the 24-hour hand also is at the  
correct position.  
00  
6. After the time setting is the way you want, press C.  
This will cause the watch to beep and change to the  
year setting mode.  
Stopwatch  
second  
hand  
10  
Alarm Operation  
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the  
watch is in.  
20  
30  
40  
7. Use D and B to change the year setting.  
Each press of B will move the stopwatch second  
hand and change the year setting in 10-year units.  
Each press of D will move the timekeeping second  
hand and change the year setting in one-year units.  
8. After the year setting is the way you want, press C.  
This will cause the watch to beep and change to the  
month setting mode.  
Alarm operations are performed in accordance with the Timekeeping Mode time.  
Pressing any button stops the alarm tone operation.  
90  
80  
To toggle an alarm on and off  
In the Alarm Mode, press A to toggle the alarm ON and OFF.  
70  
50  
60  
Setting the year (10-year units)  
0
Timekeeping  
second hand  
1
9
8
7
2
3
4
6
5
Setting the year  
(1-year units)  
4
 
Operation Guide 5007  
9. Use D to move the stopwatch second hand to the  
month setting you want.  
Dec  
Charging Guide  
Nov  
Jan  
After a full charge, timekeeping remains enabled for up to about five 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.  
Oct  
Sep  
Aug  
Feb 10.After the month setting is the way you want, press C.  
This will cause the watch to beep and change to the  
date setting mode.  
Mar  
11.Use D (+) and B (–) to change the date setting.  
Pressing C will return to the time setting mode.  
12.After all the settings are the way you want, press A to  
return to the Timekeeping Mode.  
Exposure Level (Brightness)  
Outdoor sunlight (50,000 lux)  
Approximate Exposure Time  
8 minutes  
Apr  
Jul  
May  
Sunlight through a window (10,000 lux)  
30 minutes  
Jun  
Pressing A any time during the above procedure will  
return to the Timekeeping Mode, where the timekeeping  
second hand will resume timekeeping from second 0.  
The day of the week is displayed automatically in  
accordance with the date (year, month, and day)  
settings.  
Setting the month  
Daylight through a window on a cloudy day  
(5,000 lux)  
48 minutes  
Indoor fluorescent lighting (500 lux)  
8 hours  
For details about the battery operating time and daily operating conditions, see the  
“Power Supply” section of the Specifications.  
Stable operation is promoted by frequent charging.  
Date  
Setting the date  
RecoveryTimes  
The table below shows the amount exposure that is required to take the battery from  
one level to the next.  
Power Supply  
Exposure Level  
(Brightness)  
Approximate Exposure Time  
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.  
Level 3  
Level 2  
Level 1  
Example: Orient the watch so its face is  
pointing at a light source.  
The illustration shows how to position  
a watch with a resin band.  
Solar cell  
Outdoor sunlight (50,000 lux)  
1 hour  
20 hours  
73 hours  
Sunlight through a window  
(10,000 lux)  
2 hours  
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.  
Daylight through a window on  
a cloudy day (5,000 lux)  
4 hours  
– – –  
– – –  
Indoor fluorescent lighting  
(500 lux)  
34 hours  
The above exposure time values are all for reference only. Actual required exposure  
times depend on lighting conditions.  
Important!  
Reference  
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.  
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.  
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.  
The special rechargeable (secondary) battery used by your watch is not intended to  
be removed or replaced by you. Use of a rechargeable battery other than the special  
one specified for this watch can damage the watch.  
Auto Return Features  
If you leave the watch in the Alarm Mode or home position adjustment 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.  
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.  
High-Speed Movement  
The D and B buttons are used to change the hand setting in various setting  
modes. In most cases, holding down these buttons will start high-speed movement  
of the applicable hand(s) and day.  
High-speed movement of hands and day will continue until you press any button, or  
until the moving hand(s) and day finishes one complete cycle.  
- One complete cycle for the hands is one revolution (360 degrees) of the hour  
hand, or 24 hours.  
Battery Power Levels  
The movement of the analog hands indicates the current battery power level.  
Level  
Hand Movement  
Normal.  
Function Status  
- One complete cycle for the day is 31 days.  
1
2
All functions enabled.  
High-speed hand movement also is triggered by changing from one mode to  
another, changing a World Time Mode setting (changing the World Time city in the  
World Time Mode, swapping the World Time city and Home city), etc.  
All buttons (except for the C button for changing modes) are disabled during a high-  
speed hand or date operation.You will be able to perform button operations again  
after high-speed operation is stopped.  
Second hand jumps  
every 2 seconds.  
Beeper and time  
calibration signal  
Date changes to home reception disabled.  
position.  
3
Second hand stopped. All functions disabled.  
Hour and minute hands  
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.  
stopped at 12 o’clock.  
Jumps two seconds  
The second hand jumping every two seconds (Level 2) indicates that battery power  
is quite low. Expose the watch to light as soon as possible to charge the battery.  
When battery power is at Level 2, time calibration signal reception is disabled.  
At Level 3, all functions are disabled and settings return to their initial factory  
defaults. The watch will continue to keep time internally for about one month after the  
battery drops to Level 3. If you recharge the battery sufficiently during this period,  
the analog hands will move automatically to the correct setting and normal  
timekeeping will resume.  
Alarm operation can cause hand movement to stop due to a 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.  
Even if the time calibration signal is received properly, certain conditions can cause  
the time setting to be off by up to one second.  
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.  
Charging Precautions  
If you are in an area where proper time calibration signal reception is impossible, the  
watch keeps time with the precision noted in “Specifications”.  
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.  
Timekeeping  
Warning!  
The year can be set in the range of 2000 to 2099.  
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.  
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 or when battery power drops to  
Level 3.  
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 World Time Mode  
is calculated in accordance with the Coordinated Universal Time (UTC) offset of  
each zone, based on your Home Time Zone time setting.  
On the dashboard of a car parked in direct sunlight  
Too close to an incandescent lamp  
Under direct sunlight  
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.  
5
 
Operation Guide 5007  
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.  
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 only is stopped, all other functions are  
enabled.  
6 or 7 days  
(function sleep)  
All functions, including analog timekeeping, disabled  
Internal timekeeping maintained  
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.  
To recover from the sleep state  
Perform any one of the following operations.  
Move the watch to a well-lit area.  
Press any button.  
Specifications  
Accuracy at normal temperature: 20 seconds a month (with no signal calibration)  
Timekeeping: Hour, minutes (hand moves every 10 seconds), seconds, 24-hour, day,  
day of the week  
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to  
2099  
Other: Home City code (can be assigned one of 30 city codes); Daylight Saving  
Time (summer time) / Standard Time  
Time Calibration Signal Reception: Auto receive up to six times a day (Remaining  
auto receives cancelled as soon as one is successful); Manual receive  
Receivable Time Calibration Signals:  
Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5 kHz); Anthorn,  
England (Call Sign: MSF, Frequency: 60.0 kHz); Fukushima, Japan (Call  
Sign: JJY, Frequency: 40.0 kHz); Fukuoka/Saga, Japan (Call Sign: JJY,  
Frequency: 60.0 kHz); Fort Collins, Colorado, the United States (Call  
Sign: WWVB, Frequency: 60.0 kHz)  
WorldTime: 29 cities (29 time zones)  
Other: Standard Time/Daylight Saving Time (summer time); Home City/World  
Time City swapping  
Stopwatch: Measuring capacity: 59'59.95''  
Measuring unit: 1/20 second  
Measuring mode: Elapsed time  
Countdown Timer:  
Measuring unit: 1 second  
Input range: 1 to 30 minutes (1-minute increments)  
Other: Progress beeper; One-touch reset of countdown start time to 5 minutes  
Alarm: Daily alarm  
Other: Power Saving  
Power Supply: Solar cell and one rechargeable battery  
Approximate battery operating time: 5 months (from full charge to Level 3) under  
the following conditions:  
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  
6 minutes of signal reception per day  
City Code Table  
City  
Code  
City  
Code  
City  
UTC Offset/  
GMT Differential  
City  
UTC Offset/  
GMT Differential  
PPG  
HNL  
ANC  
LAX  
DEN  
CHI  
NYC  
SCL  
RIO  
FEN  
RAI  
UTC  
LON  
PAR  
ATH  
Pago Pago  
Honolulu  
Anchorage  
Los Angeles  
Denver  
Chicago  
New York  
Santiago  
–11.0  
–10.0  
–09.0  
–08.0  
–07.0  
–06.0  
–05.0  
–04.0  
–03.0  
–02.0  
–01.0  
JED  
THR  
DXB  
KBL  
KHI  
DEL  
DAC  
RGN  
BKK  
HKG  
TYO  
ADL  
SYD  
NOU  
WLG  
Jeddah  
Tehran  
Dubai  
Kabul  
Karachi  
Delhi  
+03.0  
+03.5  
+04.0  
+04.5  
+05.0  
+05.5  
+06.0  
+06.5  
+07.0  
+08.0  
+09.0  
+09.5  
+10.0  
+11.0  
+12.0  
Dhaka  
Yangon  
Bangkok  
Hong Kong  
Tokyo  
Adelaide  
Sydney  
Noumea  
Wellington  
Rio De Janeiro  
Fernando de Noronha  
Praia  
+00.0  
London  
Paris  
Athens  
+01.0  
+02.0  
Based on data as of March 2008.  
The rules governing global times (UTC offset and GMT differential) and summer  
time are determined by each individual country.  
6
 

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