Case / bezel material: ResinResin BandMineral GlassShock Resistant200-meter water resistanceElectro-luminescent backlight Dual illuminator, afterglowFlash alert Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer time up alarm, 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, time up alarm, progress beeper on/offMulti function alarms 3 independent multi function alarms (2 one-time alarms and 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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