Features:Shock Resistant200M Water ResistantAuto LED Backlight (Super Illuminator)Flash alert Flasher with buzzer that sounds for alarms, hourly time signal, countdown timer time-up alarmWorld Time 35 time zones (100 cities + UTC), city code display, daylight saving on/off5 Daily or One-time Alarms (1 with Snooze), selectable flash alert/vibration alertHourly Time SignalVibration Alert (Daily Alarms, Countdown Timer, Hourly Time Signal)1/100 second stopwatch Measuring capacity: 999:59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place timesCountdown timer w/Direct Access Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1- second increments, 1-minute increments and 1-hour increments) Other: Selectable flash alert/vibration alert, direct start from timekeeping modeFull Auto Calendar (pre-programmed until the year 2099)12/24 Hour FormatsLow Battery WarningButton operation tone on/offAccuracy: +/- 15 seconds per monthBattery: CR2032Approx. battery life: 5 years

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