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4
Operation Guide 3178
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 after the preset illumination
duration (see “To specify the illumination duration”),
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 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
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
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 in 0.5-hour increments in the range of –12.0 to
+14.0); Daylight Saving Time (summer time)/Standard Time
Stopwatch (ST1)
Measuring unit: 1/100 second
Measuring capacity: 999:59'59.99''
Measuring modes: Elapsed time, split time, two finishes
Other: Auto-Start
Stopwatch (ST2)
Measuring unit: 1/100 second
Measuring capacity: 999:59'59.99''
Measuring modes: Elapsed time, split time, two finishes
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
Alarms: 5 multi-function* alarms (four one-time alarms; one snooze alarm);
Hourly Time Signal
*
Alarm type: Daily alarm, date alarm, 1-month alarm, monthly alarm
World Time: 48 cities (29 time zones)
Other: Daylight Saving Time/Standard Time
Illumination: EL (electro-luminescent panel); Selectable illumination duration;
Auto Light Switch
Other: Button operation tone on/off, Flash alert, Low temperature resistance
(–20°C/–4°F)
Battery: One lithium battery (Type: CR2025)
Approximately 3 years on type CR2025 (20 seconds of alarm operation per day
(with flash alert), one countdown timer operation (with progress beeper and flash
alert) per week, one stopwatch operation (with auto start and flash alert) per week,
5 seconds of illumination per day)
–11
–10
–9
–8
–7
–6
–5
–4
–3.5
–3
–1
0
+1
+2
Pago Pago
Honolulu
Anchorage
Los Angeles
Denver
Mexico City
Chicago
New York
Caracas
St. Johns
Rio De Janeiro
Buenos Aires
Praia
London
Dakar
Madrid
Paris
Monte Carlo
Rome
Berlin
Stockholm
Athens
Johannesburg
Ankara
City Code Table
City
City
UTC Offset/
Code GMT Differential
PPG
HNL
ANC
LAX
DEN
MEX
CHI
NYC
CCS*
YYT
RIO
BUE
RAI
LON
DKR
MAD
PAR
MCM
ROM
BER
STO
ATH
JNB
ANK
City
City
UTC Offset/
Code GMT Differential
NIC
HEL
CAI
JRS
MOW
JED
THR
DXB
KBL
KHI
DEL
DAC
RGN
BKK
SIN
HKG
BJS
PER
SEL
TYO
ADL
SYD
NOU
WLG
Nicosia
Helsinki
Cairo
Jerusalem
Moscow
Jeddah
Tehran
Dubai
Kabul
Karachi
Delhi
Dhaka
Yangon
Bangkok
Singapore
Hong Kong
Beijing
Perth
Seoul
Tokyo
Adelaide
Sydney
Noumea
Wellington
+2
+3
+3.5
+4
+4.5
+5
+5.5
+6
+6.5
+7
+8
+9
+9.5
+10
+11
+12
• Based on data as of March 2008.
• The rules governing global times (UTC offset and GMT differential) and summer
time are determined by each individual country.
* 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.