Smartphone Link FeatureMobile link (Wireless linking using Bluetooth)App Connectivity FeatureAuto time adjustmentEasy watch settingApproximately 300 world time cities + user-added pointTimeandamp;amp; placePhone finderWorld Time2 World time38 time zones (55 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swappingStopwatch1/100-second stopwatchMeasuring 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 timesTimerCountdown timerMeasuring unit: 1 secondCountdown range: 24 hoursCountdown start time setting range: 1 second to 24 hours (1-second increments)Alarm/Hourly Time Signal5 daily alarms (with 1 snooze alarm)Hourly time signalCalendarFull auto-calendar (to year 2099)Mute FeatureButton operation tone on/offEnergy Saving FeaturePower Saving (display goes blank to save power when the watch is left in the dark)Battery Display/AlertLow battery alertRun TimeApprox. battery operating time:6 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)AccuracyAccuracy: ±15 seconds per month (with no signal calibration and mobile link function)Other Features12/24-hour formatDate/month display swappingRegular timekeeping:Hour, minute, second, pm, month, date, dayMemory in Pixel (MIP) LCDTime Adjustment DetailsTime calibration signal receptionAuto 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 signalManual receiveThe latest signal reception resultsTime Calibration SignalsStation name: DCF77 (Mainflingen, Germany)Frequency: 77.5 kHzStation name: MSF (Anthorn, England)Frequency: 60.0 kHzStation name: WWVB (Fort Collins, United States)Frequency: 60.0 kHzStation 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 Date Bracelet Fixed Smartphone Link FeatureMobile link (Wireless linking using Bluetooth)App Connectivity FeatureAuto time adjustmentEasy watch settingApproximately 300 world time cities + user-added pointTimeandamp;amp; placePhone finderWorld Time2 World time38 time zones (55 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swappingStopwatch1/100-second stopwatchMeasuring 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 timesTimerCountdown timerMeasuring unit: 1 secondCountdown range: 24 hoursCountdown start time setting range: 1 second to 24 hours (1-second increments)Alarm/Hourly Time Signal5 daily alarms (with 1 snooze alarm)Hourly time signalCalendarFull auto-calendar (to year 2099)Mute FeatureButton operation tone on/offEnergy Saving FeaturePower Saving (display goes blank to save power when the watch is left in the dark)Battery Display/AlertLow battery alertRun TimeApprox. battery operating time:6 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)AccuracyAccuracy: ±15 seconds per month (with no signal calibration and mobile link function)Other Features12/24-hour formatDate/month display swappingRegular timekeeping:Hour, minute, second, pm, month, date, dayMemory in Pixel (MIP) LCDTime Adjustment DetailsTime calibration signal receptionAuto 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 signalManual receiveThe latest signal reception resultsTime Calibration SignalsStation name: DCF77 (Mainflingen, Germany)Frequency: 77.5 kHzStation name: MSF (Anthorn, England)Frequency: 60.0 kHzStation name: WWVB (Fort Collins, United States)Frequency: 60.0 kHzStation 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