Operation Guide 4739
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.
Keep the watch exposed to bright light
Bright Light | The electricity generated by the solar cell of the watch is |
stored by a |
l | l | l | l | l | l | l | l | l | l | l | where it is not exposed to light causes the battery to run |
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Solar cell |
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| • When you are not wearing the watch on your wrist, |
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| position the face so it is pointed at a source of bright |
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| light. |
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| • You should try to keep the watch outside of your sleeve |
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| as much as possible. Charging is reduced significantly if |
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| the face is only partially covered. |
• 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
•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 50 minutes 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
Battery charges in the light.
Solar cell | Bright Light | |
(Converts light to |
| Electrical |
electrical power.) |
| energy |
| LEVEL 1 | All |
| functions | |
| LEVEL 2 | |
| enabled | |
| LEVEL 3 |
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Charge | LEVEL 4 |
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Rechargeable battery
Battery discharges in the dark.
| LEVEL 1 |
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| LEVEL 2 |
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Dis- | LEVEL 3 | Some or all | |
charge | LEVEL 4 | functions | |
disabled | |||
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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.
• Most of the display examples in this manual show only the digital display, without the analog hands.
•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 Cto change from mode to mode.
•In any mode (except when a setting screen is on the display), press Bto illuminate
the face of the watch.
Battery Level Indicator | World Time Mode |
Timekeeping Mode |
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Press C. |
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▲ | ▲ |
▲ |
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Radio-controlled Atomic Timekeeping
Countdown Timer Mode | Stopwatch Mode |
▲ | ▲ |
Hand Setting Mode | Alarm Mode |
▲ | ▲ |
Hour hand
Minute hand
Month Day
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.
Current Time Setting
This watch adjusts its time setting automatically in accordance with a time calibration signal. You can also 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”.
Important!
• 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 can also 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 “Home |
City Codes and Transmitters”. |
• Under factory default settings, auto receive is turned off for all of the following city |
codes: MOW (Moscow), HKG (Hong Kong), BJS (Beijing), HNL (Honolulu), and |
ANC (Anchorage). For details about turning on auto receive for these city codes, see |
“To turn auto receive on and off”. |
• You can disable time signal reception, if you want. See “To turn auto receive on and |
off” for more information. |
• See the maps under “Approximate Reception Ranges” for information about the |
•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.
•The analog time of this watch is synchronized with the digital time. Because of this, the analog time setting is automatically adjusted whenever you change the digital setting. See “Analog Timekeeping” for more information.
To specify your Home City |
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City code |
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| 1. In the Timekeeping Mode, hold down Athe city code | |||||||||
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| starts to flash. This is the setting screen. |
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| 2. Press D(east) to select the city code you want to use | ||||||||||
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| German/U.K. Signal |
| Japan Signal |
| U.S. Signal |
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City | City |
| City | City |
| City | City | City | City | City | City | |
Code | Name |
| Code | Name |
| Code | Name | Code | Name | Code | Name | |
LIS | Lisbon |
| ATH | Athens |
| HKG | Hong Kong | HNL | Honolulu | YWG | Winnipeg | |
LON | London |
| MOW | Moscow |
| BJS | Beijing | ANC | Anchorage | CHI | Chicago | |
MAD | Madrid |
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| TPE | Taipei | YVR | Vancouver | MIA | Miami | |
PAR | Paris |
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| SEL | Seoul | LAX | Los Angeles | YTO | Toronto | |
ROM | Rome |
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| TYO | Tokyo | YEA | Edmonton | NYC | New York | |
BER | Berlin |
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| DEN | Denver | YHZ | Halifax | |
STO | Stockholm |
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| MEX | Mexico City | YYT | St. Johns | ||
3. Press Ato exit the setting screen.
reception ranges of the watch. |
• If you are in an area that does not use Daylight Saving Time (summertime), turn off |
the DST setting. |
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. 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!
•The antenna of this watch is located on its 12 o’clock side. Position the watch with 12 o’clock facing towards a window as shown in the nearby illustration. Make sure there are no metal objects nearby.
12 o’clock
or
•Make sure the watch is facing the right way.
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