Operation Guide 5208
To measure times with the stopwatch
Elapsed Time
D | ➤D | ➤D | ➤D | ➤A |
Start | Stop |
| Stop | Clear |
Split Time |
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D | ➤A | ➤A | ➤D | ➤A |
Start | Split | Split release | Stop | Clear |
•The split time screen alternates between a split indicator (SPL) and the split time at
Two Finishes |
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D | ➤A | ➤D | ➤A | ➤A |
Start | Split | Stop | Split release | Clear |
| First runner finishes. | Second runner | Display time of |
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| Display time of first | finishes. | second runner. |
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runner.
To specify the illumination duration
1. In the Timekeeping Mode, hold down Auntil the display contents start to flash. This is the setting screen.
2. Press C10 times until the current illumination duration setting (LT1 or LT3) appears.
Illumination
An LED
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ll | l | l l | l | In any mode (except when a setting screen is on the | ||
display), press B to turn on illumination. | ||||||
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seconds or 3 seconds as the illumination duration. When you press B, the illumination will remain on for about 1.5 seconds or 3 seconds, depending on the current illumination duration setting.
Power Supply
This watch is equipped with a solar cell and a rechargeable 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.
3. Press Dto toggle the setting between LT1 (approximately 1.5 seconds) and LT3 (approximately 3 seconds).
4. Press A to exit the setting screen.
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.
•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. Charging is reduced significantly if the face is covered only partially.
Solar cell 
Important!
•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. Be sure that the watch is exposed to bright light whenever possible.
•This watch uses a 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 rechargeable battery to charge fully, contact your dealer or CASIO distributor about having it replaced.
•Never try to remove or replace the watch’s rechargeable battery yourself. Use of the wrong type of battery can damage the watch.
•The current time and all other settings return to their initial factory defaults whenever battery power drops to Level 5 (pages
•Turn on the watch’s Power Saving function (page
•The battery level indicator shows the current power level of the rechargeable battery.
Level | Battery Level Indicator | Function Status |
1 |
| All functions enabled. |
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2 |
| All functions enabled. |
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3 |
| Key operation tone, alarm, Hourly Time |
| Signal, and illumination disabled. | |
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4 |
| All hands stop at 12 o’clock. All operations |
| disabled. | |
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| disabled and initialized. | |
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•Performing illumination, or beeper operations during a
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| After some time, battery power will recover and | ||
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Recover indicator | • If | (recover) appears frequently, it probably means | ||||
that remaining battery power is low. Leave the watch in bright light to allow it to charge.
To check the current battery level
When the battery level is at Level 1 (HI) or Level 2 (MID), the corresponding battery level indicator (HI or MID, page
Battery level indicator
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indicator at Level 3 tells you that battery power is very low, and that exposure to bright light for charging is required as soon as possible.
•At Level 5, all functions are disabled and settings return to their initial factory defaults. Once the battery reaches Level 2 after falling to Level 5, reconfigure the current time, date, and other settings.
•Display indicators reappear as soon as the battery is charged from Level 5 to Level 2.
•Leaving the watch exposed to direct sunlight or some other very strong light source can cause the battery power indicator to show a reading temporarily that is higher than the actual battery level. The correct battery level should be indicated after a few minutes.
Charging Precautions
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. Also note that allowing the watch to become very hot can cause its liquid crystal display to black out. The appearance of the LCD should become normal again when the watch returns to a lower temperature.
Warning!
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.
•On the dashboard of a car parked in direct sunlight
•Too close to an incandescent lamp
•Under direct sunlight