Resin GlassWater ResistantCase / bezel material: Resin / Chrome platedStainless Steel BandAdjustableClaspLED light1/100-second stopwatchMeasuring capacity: 59'59.99"Measuring modes: Net time, splittime, 1st-2nd place timesDaily alarmHourly time signalAuto-calendar (28 days for February)12/24-hourformatRegular time keeping: Hour, minute, second, pm, date, dayAccuracy: ?30 seconds per monthApprox.battery life: 7 years on CR2016Size of case: 36.8 ? 33.2 ? 8.2 mmTotal weight: 48 g