Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.
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.
Keep the watch exposed to bright light
(Converts light to
C to change from mode to mode.
In any mode (except a setting mode), press
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
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 "To set the
time 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.
Using this watch in a country covered by a time calibration signal that is different
from the countries it supports may result in incorrect time indication due to local
application of summer time, etc.
Operation Guide 5173
The electricity generated by the solar cell of the watch is
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
When you are not wearing the watch on your wrist,
position the face so it is pointed at a source of bright
You should try to keep the watch outside of your sleeve
as much as possible. Charging is reduced significantly
if the face is even 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 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.
B to illuminate the display for about
World Time Mode
Battery discharges in the dark.
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.
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
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.
Countdown Timer Mode
To specify your Home City
In the Timekeeping Mode, hold down
five seconds until the left dial hand points to T1 and
the city code flashes on the upper display. This is the
Left dial hand
D (east) and B (west) to select the city code
you want to use as your Home City.
Hour : Minutes
: Lisbon, London
MAD, PAR, ROM, BER, STO : Madrid, Paris, Rome, Berlin, Stockholm
HKG, BJS, TPE
: Hong Kong, Beijing, Taipei
: Seoul, Tokyo
: Vancouver, Los Angeles
: Edmonton, Denver
: Mexico City, Chicago
MIA, YTO, NYC
: Miami, Toronto, New York
: St. Johns
Some or all
A for about