Case / bezel material: ResinResin BandMineral GlassShock Resistant200-meter water resistanceElectro-luminescent backlight Selectable illumination duration, afterglowFlash alart Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer progress beeper, and stopwatch auto startWorld time 29 time zones (48 cities), city code display, daylight saving on/off1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Other: 5-second countdown auto startCountdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) Others: Auto-repeat, progress beeper on/off3 multi-function alarms (with 1 snooze alarm)Hourly time signalFull auto-calendar (to year 2099)12/24-hour formatButton operation tone on/offRegular timekeeping: Hour, minute, second, pm, year, month, date, dayAccuracy: ±30 seconds per monthApprox. battery life: 5 years on CR2016 
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