4
Operation Guide 3247
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.
World Time
All World Time Mode times are calculated from the current Home City time in the
Timekeeping Mode using UTC time differential values.
The seconds count of the World Time is synchronized with the seconds count of the
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Timekeeping Mode.
The UTC differential is a value that indicates the time difference between a
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reference point in Greenwich, England and the time zone where a city is located.
The letters “UTC” is the abbreviation for “Coordinated Universal Time”, which is the
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world-wide scientific standard of timekeeping. It is based upon carefully maintained
atomic (cesium) clocks that keep time accurately to within microseconds. Leap
seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s
rotation.
Illumination Precautions
The electro-luminescent panel that provides illumination loses power after very long
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use.
Illumination may be hard to see when viewed under direct sunlight.
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The watch may emit an audible sound whenever the display is illuminated. This
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is due to vibration of the EL panel used for illumination, and does not indicate
malfunction.
Illumination will turn off automatically if an alarm starts to sound while Flash Alert is
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turned off. When Flash Alert is turned on, illumination will flash with the alarm.
Frequent use of illumination runs down the battery.
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Auto light switch precautions
Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light
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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
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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
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(see “To specify the illumination duration” (page E-33)),
even if you keep the watch pointed towards your face.
Static electricity or magnetic force can interfere with proper
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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 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, illumination may not turn on until about one second after
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you turn the face of the watch towards you. This does not necessarily indicate
malfunction of the auto light switch.
You may notice a very faint clicking sound coming from the watch when it is shaken
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back and forth. This sound is caused by mechanical operation of the auto light
switch, and does not indicate a problem with the watch.
Specifications
Accuracy at normal temperature: ±15 seconds a month
Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Home Time zone (selectable from among 29 zones); Daylight Saving Time
(summer time)/Standard Time
World Time: 48 cities (29 time zones)
Other: Daylight Saving Time/Standard Time
Alarms: 3 multi-function* alarms (two one-time alarms; one snooze alarm);
Hourly Time Signal
*Alarm type: Daily alarm, date alarm, 1-month alarm, monthly alarm
Countdown Timer
Measuring unit: 1 second
Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Other: Auto-repeat timing; Progress beeper
Stopwatch
Measuring unit: 1/100 second
Measuring capacity: 23:59’59.99”
Measuring modes: Elapsed time, split time, two finishes
Illumination: EL (electro-luminescent panel); Selectable illumination duration;
Auto Light Switch
Other: Button operation tone on/off, Flash alert
Battery: One lithium battery (Type: CR2025)
Approximately 7 years on type CR2025 (10 seconds of alarm operation (with flash
alert) per day, one countdown timer operation (with progress beeper) per week, one
stopwatch operation (with auto start) per week, 1.5 seconds of illumination per day)
More than 15 degrees
too high
City Code Table
City
Code
City
UTC Offset/
GMT Differential
PPG
Pago Pago
–11
HNL
Honolulu
–10
ANC
Anchorage
–9
YVR
Vancouver
–8
SFO
San Francisco
LAX
Los Angeles
DEN
Denver
–7
MEX
Mexico City
–6
CHI
Chicago
MIA
Miami
–5
NYC
New York
CCS*
Caracas
–4
YYT
St. Johns
–3.5
RIO
Rio De Janeiro
–3
RAI
Praia
–1
LIS
Lisbon
0
LON
London
BCN
Barcelona
+1
PAR
Paris
MIL
Milan
ROM
Rome
BER
Berlin
ATH
Athens
+2
JNB
Johannesburg
IST
Istanbul
CAI
Cairo
JRS
Jerusalem
MOW
Moscow
+3
JED
Jeddah
City
Code
City
UTC Offset/
GMT Differential
THR
Tehran
+3.5
DXB
Dubai
+4
KBL
Kabul
+4.5
KHI
Karachi
+5
MLE
Male
DEL
Delhi
+5.5
DAC
Dhaka
+6
RGN
Yangon
+6.5
BKK
Bangkok
+7
SIN
Singapore
+8
HKG
Hong Kong
BJS
Beijing
SEL
Seoul
+9
TYO
Tokyo
ADL
Adelaide
+9.5
GUM
Guam
+10
SYD
Sydney
NOU
Noumea
+11
WLG
Wellington
+12
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Based on data as of December 2009.
* In December 2007, Venezuela
changed its offset from
–
4 to
–
4.5.
Note, however, that this watch displays
an offset of
–
4 (the old offset) for the
CCS (Caracas, Venezuela) city code.
