Operation Guide 3278/3279
To measure times with the stopwatch |
Elapsed Time |
Countdown Timer
D | ➤ D | ➤ D | ➤ D | ➤ B |
Start | Stop | Stop | Clear | |
Split Time |
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D | ➤ B | ➤ B | ➤ D | ➤ B |
Start | Split | Split release | Stop | Clear |
| (SPL displayed) |
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Two Finishes |
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D | ➤ B | ➤ D | ➤ B | ➤ B |
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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Number of Repeats
Minutes
Seconds
Timer 1
Dual timers can be set with two different starting times. The watch can be configured so the two timers alternate, so when one reaches the end of its countdown, the other timer starts. You can specify a “number of repeats” value, which controls how many times the
You can specify up to 10 repeats. The watch emits a short beep whenever either of the timers reaches the end of its countdown during an ongoing timer operation. The watch emits a
runner. |
Countdown End Beeper
The countdown end beeper lets you know when the countdown reaches zero. The beeper stops after about 5 seconds or when you press any button.
To configure the countdown timer
1.While the countdown start time is on the display in the Countdown Timer Mode, hold down A until the current countdown start time starts to flash, which indicates the setting screen.
• If the countdown start time is not displayed, use the procedure under “To use the countdown timer” (page
2.Press C to move the flashing in the sequence shown below to select other settings.
3.When the setting you want to change is flashing, press D and B to change it as described below.
Setting | Screen | Button Operation | |
Minutes, Seconds |
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| Press D (+) and B |
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Number of Repeats |
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| Press D (+) and B |
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• To disable either timer, set 00'00" as its countdown start time.
4.Press A to exit the setting screen.
To use the countdown timer
Preset number of repeats |
Illumination
| (Reset) | |
Current repeat count | Current time | |
Current timer time | ||
Timer 1 or 2 | ||
| (Start/Stop) |
Press D while in the Countdown Timer Mode to start the countdown timer.
•The countdown is performed by alternating between Timer 1 and Timer 2. A short beep is emitted to signal a changeover from one timer to the other.
•Press D to pause a countdown. Press D again to resume.
•Pressing B while a countdown timer is stopped resets the timers to the start times specified by you.
•The watch emits a
•The countdown operation continues and the watch beeps when required even if you exit the Countdown Timer mode.
•To stop a countdown operation completely, first pause it (by pressing D), and then press B. This returns the countdown time to its starting value.
Auto light switch on indicator
An LED
•The auto light switch must be turned on (indicated by the auto light switch on indicator) for it to operate.
•See “Illumination Precautions” (page
To illuminate the display manually
In any mode (except when a setting screen is on the display), press L to turn on illumination.
•The above operation turns on illumination regardless of the current auto light switch setting.
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•You can use the procedure below to select either 1.5 seconds or 3 seconds as the illumination duration. When you press L, the illumination will remain on for about 1.5 seconds or 3 seconds, depending on the current illumination duration setting.
To specify the illumination duration
1.In the Timekeeping Mode, hold down A until the display contents start to flash. This is the setting screen.
2.Press C 10 times until the current illumination duration
setting ( 
or 
) appears.
3. Press D to toggle the setting between 
(approximately 1.5 seconds) and 
(approximately 3 seconds).
4. Press A twice to exit the setting screen.
About the Auto Light Switch
Turning on the auto light switch causes illumination to turn on, whenever you position your wrist as described below in any mode. Note that this watch features a “Full Auto LED Light”, so the auto light switch operates only when available light is below a certain level. It does not illuminate the display under bright light.
Moving the watch to a position that is parallel to the ground and then tilting it towards you more than 40 degrees causes illumination to turn on.
•Wear the watch on the outside of your wrist.
Parallel to | More than 40° |
ground |
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Warning!
•Always make sure you are in a safe place whenever you are reading the display of the watch using the auto light switch. Be especially careful when running or engaged in any other activity that can result in accident or injury. Also take care that sudden illumination by the auto light switch does not startle or distract others around you.
•When you are wearing the watch, make sure that its auto light switch is turned off before riding a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a traffic accident and serious personal injury.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down L for about three seconds to toggle the auto light switch on (auto light switch on indicator displayed) and off (auto light switch on indicator not displayed).
•The auto light switch on indicator is on the display in all modes while the auto light switch is turned on.
Power Supply
This watch is equipped with a solar panel and a rechargeable battery that is charged by the electrical power produced by the solar panel. The illustration shown below shows how you should position the watch for charging.
Example: Orient the watch so its face is | Solar panel |
pointing at a light source. |
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•The illustration shows how to position a
watch with a resin band.
• Note that charging efficiency drops when any part of the solar panel 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.