Case / bezel material: ResinResin BandShock ResistantMineral Glass200-meter water resistanceElectro-luminescent backlight AfterglowFlash alert Flashes with buzzer that sounds for alarm, hourly time signal, countdown timer time up alarm1/100-second stopwatch Measuring capacity: 00'00"00~59'59"99 (for the first 60 minutes) 1:00'00~23:59'59 (after 60 minutes) Measuring unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) Measuring modes: Elapsed time, split time, 1st-2nd place timesCountdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments) Other: Auto-repeatMulti-function alarmHourly time signalFull auto-calendar (to year 2039)12/24-hour formatRegular timekeeping: Hour, minute, second, pm, month, date, dayAccuracy: ±15 seconds per monthApprox. battery life: 2 years on CR2016