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Operation Guide 3434
E-39
Scrolling
The B and D buttons are used in various modes and setting screens to scroll
through data on the display. In most cases, holding down these buttons during a scroll
operation scrolls at high speed.
Initial Screens
When you enter the World Time or Alarm Mode, the data you were viewing when you
last exited the mode appears fi rst.
Timekeeping
x Resetting the seconds to while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to
without changing the minutes.
x The year can be set in the range of 2000 to 2099.
x The watch’s built-in full automatic calendar makes allowances for different month
lengths and leap years. Once you set the date, there should be no reason to change
it except after you have the watch’s battery replaced.
E-38
To turn the button operation tone on and off
In any mode (except when a setting screen is on the display), hold down C to toggle
the button operation tone on (the mute indicator not displayed) and off (the mute
indicator displayed).
x Holding down C to turn the button operation tone on or off also causes the watch’s
current mode to change.
x The mute indicator is displayed in all modes when the button operation tone is
turned off.
Auto Return Features
x If you leave the watch in the Alarm Mode for two or three minutes without performing
any operation, it automatically changes to the Timekeeping Mode.
x If you leave a screen with fl ashing digits on the display for two or three minutes
without performing any operation, the watch automatically exits the setting screen.
E-37
x Graphic area B: In the Timekeeping Mode and World Time Mode, segments indicate
the current time (in units of one second). In the Countdown Timer
Mode and Stopwatch Mode, segments indicate the ongoing timer
measurement (in units of one second).
Button Operation Tone
The button operation tone sounds any time you press one
of the watch’s buttons. You can turn the button operation
tone on or off as desired.
x Even if you turn off the button operation tone, the alarms,
the Hourly Time Signal, and the countdown alarm all
operate normally.
Mute indicator
E-36
Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Graphic Areas
There are two graphic areas named A and B.
x Graphic area A: In the Timekeeping Mode and World
Time Mode, segments indicate the
current time (in units of 10 seconds).
In the Countdown Timer Mode and
Stopwatch Mode, segments indicate
the ongoing timer measurement (in
units of 1/10 second).
Graphic area B
Graphic area A
E-35
Warning!
x Always make sure you are in a safe place whenever you are reading 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.
x When you are wearing the watch, make sure that its auto light switch is turned
off before riding on 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 traffi c 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) or off (auto light switch on
indicator not displayed).
x The auto light switch on indicator is on the display in all modes while the auto light
switch is turned on.
x In order to protect against running down the battery, the auto light switch turns off
automatically approximately six hours after you turn it on.
E-34
About the Auto Light Switch
While the auto light switch is enabled, illumination turns on whenever you position
your wrist as described below in any mode.
Moving the watch to a position that is parallel to the ground and then tilting it
towards you at more than 40 degrees causes illumination to turn on.
x Wear the watch on the outside of your wrist.
Parallel to ground
More than 40°
E-33
To turn on illumination
In any mode (except when a setting screen is on the display), press L to turn on
illumination.
x You can use the procedure above 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
seconds start to fl ash, which indicates the setting
screen.
2. While the seconds are fl ashing, press C nine times to
display the illumination duration setting screen.
3. Press D to toggle between 1.5 seconds (
) and
3 seconds (
).
4. Press A to exit the setting screen.
E-32
Illumination
This watch has two LEDs (light-emitting diode) that cause
the entire display to glow for easy reading in the dark. The
watch’s auto light switch turns on illumination automatically
when you angle the watch for reading towards your face.
x The auto light switch must be turned on (indicated by the
auto light switch on indicator) for it to operate.
x See “Illumination Precautions” (page E-42) for more
important information.
Auto light switch on
indicator
E-31
To measure times with the stopwatch
Elapsed Time
D D D D B
Start Stop Re-start Stop Clear
Split Time
D B B D B
Start Split
(SPL displayed)
Split release Stop Clear
Two Finishes
D B D B B
Start Split
First runner
fi nishes. Display
time of fi rst
runner.
Stop
Second runner
fi nishes.
Split release
Display time of
second runner.
Clear
E-30
Stopwatch
The stopwatch lets you measure elapsed time, split
times, and two fi nishes.
x A display range of the stopwatch is 23 hours, 59
minutes, 59.99 seconds.
x A stopwatch continues to run, restarting from zero after
it reaches its limit, until you stop it.
x A stopwatch measurement operation continues even if
you exit the Stopwatch Mode.
x Exiting the Stopwatch Mode while a split time is frozen
on the display clears the split time and returns to
elapsed time measurement.
x All of the operations in this section are performed in
the Stopwatch Mode, which you enter by pressing C
(page E-7).
Seconds
Minutes
Hours
1/100 second