Basic InformationCase size (L W H)46 43.8 11.3 mmWeight35 gCase and bezel materialResinBandResin BandPower supply and battery lifeApprox. battery life: 7 years on CR2016ExteriorGlassResin GlassWatch FeaturesStopwatch1/100-second stopwatch Measuring capacity: 59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place timesAlarm/hourly time signalDaily alarmHourly time signalLightLED backlightLight colorLED:AmberCalendarAuto-calendar (28 days for February)AccuracyAccuracy: 30 seconds per monthOther features12/24-hour formatRegular timekeeping: Digital: Hour, minute, second, pm, date, day.