Basic InformationCase size (L W H)38.8 29.8 8.1 mmWeight47 gCase and bezel materialResin / Chrome platedBandStainless Steel BandAdjustable ClaspWater resistanceWater ResistantPower supply and battery lifeApprox. battery life: 3 years on SR920WExteriorGlassResin GlassCompatible band size140 to 205 mmWatch FeaturesWorld timeDual timeStopwatch1/100-second stopwatch Measuring capacity: 59'59.99'' Measuring mode: Elapsed timeAlarm/hourly time signalDaily alarmHourly time signalCalendarAuto-calendar (28 days for February)AccuracyAccuracy: 30 seconds per monthOther features12/24-hour formatRegular timekeeping: Analog: 2 hands (hour, minute) Digital: Hour, minute, second, pm, month, date, day