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Operation Guide 5096 (OC)
MA0909-EA
Congratulations upon your selection of this CASIO watch.
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
Button operations are indicated using the letters A through C shown in the
illustration.
Hand Functions
<Regular timekeeping>
z Hour Hand
x Second Hand
c Minute Hand
v 24-hour Hand
<Stopwatch>
b Stopwatch Second Hand
n Stopwatch Minute Hand
This User’s Guide uses numbers shown above to identify watch hands.
Important!
The A button is designed to protect against accidental pressing. Use a thin
pointed object to press the depression of the button to operate it.
Things to check before using the watch
1. Press C to enter the regular timekeeping, observe the movement of the x Second Hand.
Is the x Second Hand moving smoothly at one-second intervals?
Is the x Second Hand moving at two-second intervals
or is it stopped completely?
Go to step 2.
The watch is charged sufficiently. For details
about charging, see “Charging the Watch”.
Power is low. Charge the watch by placing it in a
location where it is exposed to light. For details, see
“Charging the Watch”.
NO
YES
YES
NEXT
2. Check the current location setting.
Use the procedure under “Specifying Your Current Location and Setting the Time” to configure your location
setting.
Important!
Proper time calibration signal reception and time settings depend on correct location setting. Make sure you
configure these settings correctly.
3. Set the current time.
• To set the time using a time calibration signal
See “To get ready for a receive operation”.
• To set the time manually
See “Specifying Your Current Location and Setting the Time”.
The watch is now ready for use.
For details about the watch’s radio controlled timekeeping feature, see “Radio Controlled Atomic •
Timekeeping”.
Charging the Watch
The face of the watch is a solar cell that generates power from light. The generated power charges a built-in
rechargeable battery, which powers watch operations. The watch charges whenever it is exposed to light.
Charging Guide
Whenever you are not wearing
the watch, leave it in a location
where it is exposed to light.
Best charging performance •
is achieved by exposing
the watch to light that is as
strong as possible.
When wearing the watch, make
sure that its face is not blocked
from light by the sleeve of your
clothing.
The watch may enter a sleep •
state if its face is blocked by your
sleeve even only partially.
Warning!
Leaving the watch in bright light for charging 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.
On the dashboard of a car parked in direct sunlight •
Too close to an incandescent lamp •
Under direct sunlight •
Important!
Keep the watch in an area normally exposed to bright light when storing it for long periods. This helps to •
ensure that power does not run down.
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 power to run down. Make sure that the watch is exposed to bright
light whenever possible.
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Power Levels
You can get an idea of the watch’s power level by observing the movement of the
x Second Hand in the regular timekeeping.
If the • x Second Hand is moving normally at one-second intervals, power is at
Level 1.
If the •
x Second Hand is moving at two-second intervals, power is at Level 2,
which is quite low. Expose the watch to light as soon as possible so it can
charge.
Level Hand Movement Function Status
1 Normal. All functions enabled
2
x Second Hand moves at two-second
intervals.
Time calibration signal reception
disabled
3
z Hour Hand, x Second Hand and
c Minute Hand stopped at 12 o’clock.
All functions disabled
When power drops to Level 3, all functions will be disabled but the watch will •
continue to keep time internally for about one week. If you recharge the battery
sufficiently during this period, the analog hands will move automatically to the
correct setting and regular timekeeping will resume. After one week, all settings
(including timekeeping) will be cleared. Recharging the battery will reset all
settings to their initial factory defaults.
Charging Times
Exposure Level (Brightness)
Daily Operation
*1
Level Change *2
Level 3 Level 2 Level 1
Outdoor sunlight (50,000 lux) 8 minutes 3 hours 35 hours
Window sunlight (10,000 lux) 30 minutes 8 hours 134 hours
Window sunlight on cloudy day (5,000 lux) 48 minutes 13 hours 216 hours
Indoor fluorescent lighting (500 lux) 8 hours 149 hours – – –
1 Approximate exposure each day to generate power for normal daily operation. *
2 Approximate exposure to take power up one level. *
The above times are for reference only. Actual times depend on lighting conditions. •
For details about the operating time and daily operating conditions, see the “Power Supply” section of the •
Specifications.
Power Saving
Power Saving enters a sleep state automatically whenever the watch is left for one week in an area where it
is dark.
What happens when the watch is in the sleep state
All hands move to 12 o’clock and stop. •
Auto Receive becomes disabled. •
Internal timekeeping functions continue to operate normally. •
To recover from the sleep state
Move the watch to a well-lit area or press any button.
Radio Controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly. However, when using
the watch outside of areas covered by time calibration signals, you will have to adjust the settings manually as
required. See “Specifying Your Current Location and Setting the Time” for more information.
This section explains how the watch updates its time settings when the city name selected as the current
location is in Japan or China, and is one that supports time calibration signal reception.
If your location setting is this: The watch can receive the signal from the transmitter located here:
HONG KONG (HKG) Shangqiu City (China)
TOKYO (TYO) Fukushima (Japan), Fukuoka/Saga (Japan)
Approximate Reception Ranges
Japanese Signal Chinese Signal
Fukushima
500 kilometers
1,000 kilometers
Fukuoka/Saga
1,500 kilometers
Changchun500 kilometers
Beijing
Shangqiu
Shanghai
Chengdu
Hong Kong
Even when the watch is within range of a transmitter, signal reception may be impossible due to the effects •
of geographic contours, structures, weather, the time of year, the time of day, radio interference, etc. The
signal becomes weaker at distances of approximately 500 kilometers, which means that the influence of the
above conditions becomes even greater.
Signal reception may not be possible at the distances noted below during certain times of the year or day. •
Radio interference may also cause problems with reception.
Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles) −
Shangqiu (China) transmitter: 500 kilometers (310 miles) −
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.
To get ready for a receive operation
The antenna of this watch is located on its 12 o’clock side. Position the watch with 12 o’clock facing towards 1.
a window as shown in the nearby illustration. Make sure there are no metal objects nearby.
12 o’clock
or
Signal reception normally is better at night. •
The receive operation 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 operation or move the
watch during this time.
Moves at two-second
intervals.
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