Case size (L× W× H)53.3 × 52.2 × 16.8 mmWeight58 gCase and bezel materialCase / bezel material: ResinBandResin BandWater resistance100-meter water resistancePower supply and battery lifeApprox. battery life: 10 years on CR2025ExteriorGlassResin GlassWatch FeaturesWorld timeWorld timeCurrent time in 30 cities (29 time zones), daylight saving on/offStopwatch1/100-second stopwatchMeasuring capacity: 23:59'59.99''Measuring modes: Elapsed time, split time, 1st-2nd place timesTimerCountdown timerMeasuring unit: 1 secondCountdown range: 24 hoursCountdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)Alarm/hourly time signalDaily alarms3 independent daily alarms (2 one-time alarms and 1 snooze alarm)Hourly time signalCalendarFull auto-calendar (to year 2099)AccuracyAccuracy: ±30 seconds per monthOther featuresTelememoMemory capacity: Up to 30 sets of data, with 8-character name and 16-digit telephone numberOthers: Remaining memory screen, auto-sort12/24-hour formatRegular timekeeping:Analog: 2 hands (hour, minute; hands move every 20 seconds)Digital: Hour, minute, second, am/pm, month, date, day