Shock Resistant100M Water ResistantLED BacklightWorld Time29 time zones (48 cities + UTC), city code display, daylight saving on/off5 Daily Alarms (4 one-time alarms and 1 snooze alarm)Hourly Time Signal1/100 second stopwatchMeasuring capacity: 23:59'59.99"Measuring modes: Elapsed time, split time, 1st-2nd place timesCountdown TimerMeasuring Unit: 1 secondCountdown Range: 24 hoursCountdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)Full Auto Calendar (pre-programmed until the year 2099)12/24 Hour FormatsButton Operation Tone on/offAccuracy: +/- 30 seconds per monthBattery: SR726SW x 2Approx. battery life: 2 yearsModule 5338