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World time
5 World time 39 time zones (39 cities +coordinated universal time), daylight saving on/off, Home city/World time city swapping, auto summer time (DST) switching
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Stopwatch
1/100-second stopwatch Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes) 1:00'00~23:59'59 (after 60 minutes) Measuring unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) Measuring modes: Elapsed time, split time, 1st-2nd place times
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Timer
Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
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Alarm/hourly time signal
5 daily alarms (with 1 snooze alarm)
Hourly time signal
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Light
LED backlight (Super illuminator) Full auto LED light, selectable illumination duration (2 seconds or 4 seconds), afterglow
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Light color
LED:White
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Calendar
Full auto-calendar (to year 2099)
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Mute feature
Button operation tone on/off
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Energy saving feature
Power Saving (display goes blank to save power when the watch is left in the dark)
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Battery display/alert
Low battery alert
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Run time
Approx. battery operating time: 10 months on rechargeable battery (operation period with normal use without exposure to light after charge) 22 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
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Accuracy
Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)
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Other features
12/24-hour format
Date/month display swapping
Day display (days of the week selectable in six languages)
Regular timekeeping: Hour, minute, second, pm, month, date, day
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Time adjustment details
Time Calibration Signals Station name: DCF77 (Mainflingen, Germany) Frequency: 77.5 kHz Station name: MSF (Anthorn, England) Frequency: 60.0 kHz Station name: WWVB (Fort Collins, United States) Frequency: 60.0 kHz Station name: JJY (Fukushima, Fukuoka/Saga, Japan) Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga) Station name: BPC (Shangqiu City, Henan Province, China) Frequency: 68.5 kHz
Time calibration signal reception Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful) *5 times a day for the Chinese calibration signal Manual receive The latest signal reception results
