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Backlight
The backlight uses an EL (electro-luminescent) panel that
causes the entire display to glow for easy reading in the
dark. The watch's auto light switch automatically turns on
the backlight 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 "Backlight Precautions" for other important
information about using the backlight.
Auto light switch on
indicator
To turn on the backlight manually
In any mode, press L to illuminate the display for about
two seconds.
• The above operation turns on the backlight regardless
of the current auto light switch setting.
About the Auto Light Switch
Turning on the auto light switch causes the backlight to turn on for about two seconds,
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 the backlight to turn on.
Parallel to ground.
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
surprise or distract others around you.
• 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 traffic accident and serious personal injury.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down L for about two seconds to toggle the auto light
switch on (
displayed) or off (
not displayed).
• The auto light switch on indicator (
) is on the display in all modes while the auto
light switch is turned on.
• In order to protect against running down the battery, the auto light switch
automatically turns off approximately five hours after you turn it on.
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.
Week Graph
The week graph has seven segments, one for each day of the week.
Timekeeping Mode and Exercise Stopwatch Mode: Current date flashes, and
segments are darkened for all the days of the week during which the target was
attained.
Recall Mode
Daily record: The segment is darkened for the day of the week of the currently
recalled date, if the target was attained during that date.
Weekly record: Segments are darkened for all the days of the selected week during
which the target was attained.
Alarm Mode: Segments are darkened for the day of the week for which a weekly
alarm is set. In the case of a daily alarm, all segments are darkened.
• Weekly graph segments are not darkened and they do not flash on the cumulative
record screen of the Recall Mode or in the Stopwatch Mode.
• The following shows the abbreviations used for the day of the week in the week
graph.
Monday: MO
Tuesday: None
Wednesday: None
Thursday: TH
Friday: None
Saturday: None
Sunday: SU
Target Graph
The target graph consists of 10 elements, each representing 10% of a total target
value. The following explains what the target graph indicates in each mode.
Timekeeping Mode and Exercise Stopwatch Mode: Segments are darkened to
indicate the percentage of the target value attained during the current date.
Recall Mode
Daily record: Segments are darkened to indicate the percentage of the target value
attained during the currently recalled day of the week.
• Target graph segments are not darkened and they do not flash on the weekly record
screen or cumulative record screen of the Recall Mode, or in the Alarm Mode or
Stopwatch Mode.
Auto return features
If you leave a screen with flashing digits on the display for two or three minutes
without performing any operation, the watch automatically saves any settings you
have made up to that point and exits the setting screen.
Scrolling
The B and E 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.
Initial Screens
When you enter the Basic Data Input Mode, Recall Mode, or Alarm Mode, the data
you were viewing when you last exited the mode appears first.
USER'S GUIDE 2630
More than 40 °
Timekeeping
• With the 12-hour format, the P (PM) indicator appears on the display for times in the
range of noon to 11:59 p.m. and no indicator appears for times in the range of
midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
• The year can be set in the range of 2000 to 2049.
• 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.
Exercise Stopwatch
• The values for the number of calories produced by this watch show calories burned
while walking only.
• The number of calories consumed for a given amount of exercise differs from
individual-to individual (because of differences in levels of fitness, etc.) This watch
calculates its values based on general trends, and so the data it produces should be
regarded as a reasonable facsimile only.
Backlight Precautions
• The electro-luminescent panel that provides illumination loses power after very long
use.
• The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
• The watch may emit an audible sound whenever the display is illuminated. This is
due to vibration of the EL panel used for illumination, and does not indicate
malfunction.
• The backlight automatically turns off whenever an alarm operation (beep and
vibration) is performed.
• Frequent use of the backlight shortens the battery life.
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.
• The backlight may not light if the face of the watch is
More than 15 degrees
more than 15 degrees above or below parallel. Make
too high
sure that the back of your hand is parallel to the ground.
• The backlight turns off in about two seconds, even if you
keep the watch pointed towards your face.
• Static electricity or magnetic force can interfere with
proper operation of the auto light switch. If the backlight
does not light, try moving the watch back to the starting
position (parallel with the ground) and then tilt it back
toward you again. If this does not work, drop your arm
all the way down so it hangs at your side, and then bring
it back up again.
• Under certain conditions, the backlight may not light
until about one second after you turn the face of the
watch towards you. This does not necessarily indicate
malfunction of the backlight.
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