Operation Guide 5510
E-49
Auto light switch precautions
• Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light
switch to operate when it is not needed, which shortens battery life. If you want to
wear the watch on the inside of your wrist, turn off the auto light switch feature.
• Illumination may not turn on if the face of the watch is
more than 15 degrees above or below parallel. Make
sure that the back of your hand is parallel to the
ground.
• Illumination turns off in about 1.5 seconds or 3
seconds, even if you keep the watch pointed towards
your face.
More than 15 degrees
too high
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Illumination Precautions
• Illumination may be hard to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.
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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 through the data at high speed.
Timekeeping
• 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.
• The year can be set in the range of 2000 to 2099.
• 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-46
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.
• The multi-function alarms and Countdown Timer Mode
alarm will sound even if the button operation tone is
turned off.
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 (mute indicator not displayed) and off (mute indicator
displayed).
• Holding down
C
to turn the button operation tone on or off also causes the watch’s
current mode to change.
• The mute indicator is displayed in all modes when the button operation tone is
turned off.
Mute indicator
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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.
Auto Return Feature
• If you leave a screen with flashing digits on the display for two or three minutes
without performing any operation, the watch saves any settings you have made up
to that point and exits the setting screen automatically.
• The watch will change to the Timekeeping Mode automatically if you do not perform
any operation in the Recall Mode, Alarm Mode, or Hand Setting Mode for two or
three minutes.
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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
B
for about three seconds to toggle the auto
light switch on (auto light switch on indicator (
LT
)
displayed) and off (auto light switch
on indicator (
LT
) not displayed).
• The auto light switch on indicator (
LT
) remains in all modes while the auto light
switch is turned on.
• In order to protect against running down the battery, the auto light switch will turn
off automatically approximately six hours after you turn it on. Repeat the above
procedure to turn the auto light switch back on if you want.
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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.
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°
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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
B
, 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 flash, which indicates the setting
screen.
2. While the seconds are flashing, press
B
to toggle the
illumination duration between 1.5 seconds (
) and 3
seconds (
).
3. Press
A
to exit the setting screen.
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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” on page E-48 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
B
to illuminate the face of the watch.
• The above operation turns on illumination regardless of
the current auto light switch setting.
Auto light switch on
indicator
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4. When the setting you want to change is flashing, use
B
and
D
to change it as
described below.
Screen: To do this: Do this:
Toggle between Daylight Saving Time
( ) and Standard Time ( )
Press
D
.
Change the hour or minutes Use
D
(+) and
B
(–).
5. Press
A
to exit the setting screen.
• The DST indicator on the Dual Time Mode screen indicates that DST is turned on
for the Dual Time Mode time.
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