E-119
Illumination Precautions
•
The LED that provides illumination loses power after very long use.
•
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.
Auto light switch precautions
•
Wearing the watch on the inside of your wrist, movement of your arm, or vibration of your arm can
cause frequent activation of the auto light switch and illumination of the display. To avoid running down
the battery, disable the auto light switch whenever engaging in activities that might cause frequent
illumination of the display.
•
Note that wearing the watch under your sleeve while the auto light switch is enabled can cause
frequent illumination of the display and can run down the battery.
•
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 after the preset illumination duration (page E-116), 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 illumination does not turn on, try moving the
watch back to the starting position (parallel with the ground) and then tilt
it back towards your face 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.
•
You may notice a very faint clicking sound coming from the watch
when it is shaken back and forth. This sound is caused by mechanical
operation of the auto light switch, and does not indicate a problem with
the watch.
E-118
Note
•
This watch features a “Full Auto 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.
•
The auto light switch is always disabled, regardless of its on/off setting, when any one of the conditions
below exists.
While any tone (alarm, timer, etc.) is sounding
While the watch is in the Digital Compass Mode
While a receive operation is in progress
While a hand movement operation is in progress
•
If you have Auto Light enabled, display illumination may be delayed if you angle the watch towards
your face while a barometric pressure, altitude, or temperature reading operation is being performed.
To enable or disable the auto light switch
1. In the Timekeeping Mode, pull out the crown.
2. Press
B
fi ve times. This will cause
AUTO
to appear on the left of the
digital display, along with the fl ashing current auto light switch setting
(
ON
or
OFF
) on the right.
3. Rotate the crown to select either enabled (
ON
) or disabled (
OFF
) for
the auto light switch setting.
4. Push the crown back in.
•
The auto light switch is automatically disabled whenever battery power
drops to Level 4 (page E-15).
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Auto light switch
enabled indicator
E-117
About the Auto Light Switch
Enabling 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.
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 disabled 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.
More than
40°
Wear the watch on the
outside of your wrist
E-116
Illumination
The display of the watch is illuminated 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 (page E-118) for it to operate.
To turn on illumination manually
Press
L
in any mode to illuminate the display.
•
Illumination will turn off automatically if an alarm starts to sound or if you perform a crown operation.
•
Illumination will not turn on if a calibration signal receive operation or hand movement operation is in
progress. Also, illumination may not turn on while a sensor is taking a reading.
Important!
•
The light source of then analog hand area is an ultraviolet light emitting diode. Do not look directly at
the light source lens.
•
Do not attempt to remove the light source from the other watch to use it for another purpose.
•
Do not look directly into the light source located at 6 o’clock.
To change the illumination duration
1. In the Timekeeping Mode, pull out the crown.
2. Press
B
six times. This will cause
LIGHT
to appear on the digital display, along with a fl ashing value (
1
or
3
) indicating the current illumination duration setting.
3. Rotate the crown to select either
1
(1.5 seconds) or
3
(three seconds) for the illumination duration.
4. After the setting is the way you want, push the crown back in.
E-115
To swap your Home City and World Time City
In the World Time Mode, hold down
D
for at least three seconds.
•
CITY
will fl ash on the display. After that, the analog and digital
times will be swapped, so the hour, minute and second hands will
indicate the current time in New York (
NYC
).
•
With the above example, the digital display will now show the current
time in Tokyo (
TYO
).
To access the UTC (Universal Time Coordinated) time zone
In the World Time Mode, hold down
A
for at least three seconds.
•
This will cause
UTC
to fl ash on the display. Next, the current time in the UTC (Universal Time
Coordinated) time zone will be displayed.
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E-114
Swapping the Home City and World Time City
You can use the procedure below to swap your Home City with your World Time City. This function comes
in handy for those who often travel between two different time zones. The example below shows what
happens when the Home City and World Time City are swapped while the Home City originally is
TOKYO
(
TYO
) and the World Time City is
NEW YORK
(
NYC
).
Home City
World Time City
Before swapping
Tokyo
10:08 p.m
(Standard time)
New York
9:08 a.m.
(Daylight saving time)
After swapping
New York
9:08 a.m.
(Daylight saving time)
Tokyo
10:08 p.m.
(Standard time)
•
The procedure below assumes that World Time Mode settings start with the analog hands indicating
Tokyo (
TYO
) time and the digital display indicating New York (
NYC
) time.
E-113
To confi gure World Time City and summer time settings
1. In the World Time Mode, pull out the crown.
2. Rotate the crown to select the desired city code and city name
(English).
3. Press
B
.
•
This will cause the current DST setting (
ON
or
OFF
) to fl ash on the
display.
4. Rotate the crown to select either on (
ON
) or off (
OFF
) for the DST
setting.
•
You cannot switch between standard time/daylight saving time
(DST) while
UTC
is selected as the World Time City.
•
Note that the standard time/daylight saving time (DST) setting
affects only the currently selected time zone. Other time zones are
not affected.
5. After the settings are the way you want, push the crown back in.
•
The display will show the current time in the city you selected.
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DST indicator
E-112
Checking the Current Time in a Different Time Zone
You can use the World Time Mode to display the current time in any one for 31 time zones (48 cities)
around the world, and in the UTC (Universal Time Coordinated) time zone. The city that is currently
selected in the World Time Mode is called the “World Time City”.
To enter the World Time Mode
Use
B
to select the World Time Mode (
WT
) as shown on page E-32.
WT
will appear on the display. After that, the currently selected city code
and city name (in English) will scroll on the display. Next, the current time
in the World Time City will be displayed.
•
If you are using 12-hour timekeeping, the
P
(p.m.) and
A
(a.m.)
indicators will also appear on the display.
•
You can check the city code (English) of the World Time City by
pressing
D
.
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Current time in the currently
selected World Time City
Current Timekeeping
Mode time
Operation Guide 5480