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Specifications
Accuracy :
±15 seconds per month average when time
adjustment using signal reception is not
possible.
Basic Functions :
Hour, minute, second, month, day, day of
the week
Barometric pressure graph
a.m./p.m.(P)/24-hour timekeeping
Full Auto Calendar (2000 to 2099)
Signal Receive Functions :
Auto receive, manual receive
Last receive date and time display
Auto summer time switching
Auto transmitter selection (for JJY, MSF/
DCF77)
Receivable call signs:
JJY (40 kHz/60 kHz), WWVB (60 kHz), MSF
(60 kHz), DCF77 (77.5 kHz), BPC (68.5
kHz)
Auto Receive enable/disable
Digital Compass :
Measurement range: 0° to 359°
Measurement unit: 1°
Continuous Bearing Measurement (1
minute)
Compass calibration (2-point calibration,
magnetic declination angle)
North, south, east, west indication (four-
direction graphic pointer)
Bearing memory
Altimeter (relative altitude) :
Measuring range: -700 to 10,000 m (or
-2,300 to 32,800 ft.)
Display range: -10,000 to 10,000 m (or
-32,800 to 32,800 ft.)
(Altitude calibration can be used to display
any 10,700 m within the range above.)
Measuring unit: 1 m (or 5 ft.)
Measuring interval: 2 minutes/5 seconds
Altitude calibration
Altitude graph
Altitude differential measurement: -3,000 to
+3,000 m (or -9,840 to 9,840 ft.)
Reference altitude setting
Altitude Memory
Manually Recorded Data
Recording of altitude, date (month,
day), and time by button operation. Up
to 30 records.
Auto Record Data
One record of high altitude, low
altitude, cumulative ascent, cumulative
descent
Climb Record Data
Up to 14 records of high altitude, low
altitude, cumulative ascent, cumulative
descent
Watch Operation Guide 3553
Barometer :
Measurement range: 260 to 1,100 hPa (or
7.65 to 32.45 inHg)
Display range: 260 to 1,100 hPa (or 7.65 to
32.45 inHg)
Measurement unit: 1 hPa (or 0.05 inHg)
Barometric pressure adjustment
Barometric pressure graph
Barometric pressure differential graphic
Barometric pressure change indications
Temperature :
Measuring range: -10.0 to 60.0 °C (or 14.0
to 140.0 °F)
Display range: -10.0 to 60.0 °C (or 14.0 to
140.0 °F)
Measuring unit: 0.1 °C (or 0.2 °F)
Temperature Correction
Sensor Accuracy :
Direction
Measurement accuracy: Within ±10°
Accuracy guaranteed temperature
range: 10 °C to 40 °C (50 °F to 104 °F)
Bearing graph within ±2 gradations
Pressure
Measurement accuracy: Within ±3 hPa
(0.1 inHg)
(Altimeter measurement accuracy:
Within ±75 m (246 ft.))
Guaranteed accuracy temperature
range: -10 °C to 40 °C (14 °F to 104 °F)
Strong impact or prolonged exposure to
●
temperature extremes may negatively
affect accuracy.
Temperature
Measurement accuracy: Within ±2 °C
(3.6 °F)
Accuracy guaranteed temperature
range: -10 °C to 60 °C (14 °F to 140 °F)
Sunrise/Sunset Functions :
Sunrise and sunset times
Day select
Stopwatch :
Measuring unit: 1/10 seconds
Measuring range:
999 hours, 59 minutes, 59.9 seconds
(1000 hours)
Measurement Functions:
Elapsed time, cumulative time, split
times, 1st and 2nd place finisher times
Timer :
Setting unit: 1 minute
Countdown range: 24 hours
Countdown unit: 1 second
Time up alert duration: 10 seconds
Alarm :
Time alarms
Alarms: 5 (with one snooze alarm)
Setting units: Hours, minutes
Alarm tone duration: 10 seconds
Hourly time signal: Beep every hour on the
hour
World Time :
48 cities (31 time zones) and Coordinated
Universal Time (UTC)
Summer time
Other :
High-brightness LED light (Full Auto Light,
Super Illuminator, afterglow, 1.5 or 3-
second illumination duration setting), power
saving, battery level indicator, operation
tone on/off
Power Supply :
Solar panel and one rechargeable battery
Battery operating time: Approximately 6
months
Conditions:
Illumination: 1.5 seconds/day
Beeper: 10 seconds/day
Digital Compass Operations: 20 times/
month
Mountain climbing: Once/month
(Altitude readings: Approximately 1
hour; Barometric pressure change
indication measurements:
Approximately 24 hours)
Barometric Pressure Graph:
Measurement every 2 hours
Time signal reception: 4 minutes/day
Display: 18 hours/day
Specifications are subject to change without
notice.
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