Basic InformationCase size (L W H)41.2 34 10.8 mmWeight51 gCase and bezel materialResin / Chrome platedBandAdjustable ClaspStainless Steel BandWater resistanceWater ResistantPower supply and battery lifeApprox. battery life: 10 years on CR2025ExteriorGlassResin GlassWatch FeaturesWorld timeDual timeStopwatch1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place timesAlarm/hourly time signalHourly time signalMulti-function alarm (One-time or 7-time snooze)LightLED backlight AfterglowLight colorLED:GreenCalendarFull auto-calendar (to year 2099)AccuracyAccuracy: 30 seconds per monthOther features12/24-hour formatRegular timekeeping: Hour, minute, second, pm, month, date, day