Mineral GlassShock Resistant200-meter water resistanceCase / bezel material: ResinResin BandLED BacklightAuto light switch, selectable illumination duration, afterglow.Flash alertFlashes with buzzer that sounds for alarms, hourly time signal, countdown timer time up alarmMulti time (4 different cities)World time31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city / World time city swapping1/100-second stopwatchMeasuring capacity: 23:59'59.99''Measuring modes: Elapsed time, split time, 1st-2nd place timesCountdown timerMeasuring unit: 1/10 secondInput range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)5 alarms (daily or one-time)Hourly time signalFull auto-calendar (to year 2099)12/24-hour formatButton operation tone on/offRegular timekeeping: Hour, minute, second, pm, month, date, dayAccuracy: ±15 seconds per monthApprox. battery life: 7 years on CR2025Size of case: 55 × 51.2 × 17.4 mmTotal weight: 85 gLED:White