Filter
Top Products
Operation Guide 3278/3279
E-50
To measure times with the stopwatch
Elapsed Time
Split Time
Two Finishes
D
Start
D
Start
D
Start
Stop Re-start Stop
DD
D
Split
(SPL displayed)
Split release Stop
B
D
B
Split
First runner finishes.
Display time of first
runner.
Stop
Second runner
finishes.
Split release
Display time of
second runner.
D
B
B
B
B
B
➤➤➤
➤➤➤
➤➤➤
➤
➤
➤
Clear
Clear
Clear
E-51
Countdown Timer
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 two-timer countdown
operation is performed (1 = once, 2 = twice, etc.) The
starting time of each timer can be set in five-second steps
up to 99 minutes, 55 seconds.
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 5-second beep when the end of the final timer
operation (specified by the number of repeats) is reached.
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.
Seconds
Timer 1
Minutes
Number of Repeats
E-52
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
E-54) to display it.
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.
E-53
• To disable either timer, set 00'00" as its countdown start time.
4. Press A to exit the setting screen.
Button Operation
Press D (+) and B (–) to change the setting.
Press D (+) and B (–) to change the setting.
Setting
Minutes, Seconds
Number of Repeats
Screen
E-54
To use the countdown timer
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 5-second beep when the end of the final timer operation
(specified by the number of repeats) is reached.
• 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.
Current timer time
Timer 1 or 2
Current repeat count
Preset number of repeats
(Reset)
(Start/Stop)
Current time
E-55
Illumination
An LED (light-emitting diode) illuminates the face of the
watch for easy reading in the dark. The watch’s auto light
switch turns on illumination automatically when you angle
the watch towards your face.
• The auto light switch must be turned on (indicated by
the auto light switch on indicator) for it to operate.
• See “Illumination Precautions” (page E-91) for other
important information about using illumination.
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.
Auto light switch on
indicator
E-56
• 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.
E-57
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
ground
More than 40°
E-58
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.
E-59
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
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 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.
Solar panel