Basic InformationCase size (L W H)38.6 36.3 9.6 mmWeight49 gCase and bezel materialCase / bezel material: Resin / Black chrome platedBandStainless Steel BandAdjustable ClaspWater resistanceWater ResistantPower supply and battery lifeApprox. battery life: 7 years on CR2016ExteriorGlassResin GlassSurface treatmentGray ion plated bandWatch FeaturesStopwatch1/100-second stopwatch Measuring capacity: 59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place timesAlarm/hourly time signalDaily alarmHourly time signalLightElectro-luminescent backlightLight colorEL:Blue GreenCalendarAuto-calendar (28 days for February)AccuracyAccuracy: 30 seconds per monthOther features12/24-hour formatRegular timekeeping: Digital: Hour, minute, second, pm, date, day