Case / bezel material: ResinResin BandResin Glass100-meter water resistanceLED light Selectable illumination duration (1.5 seconds or 3 seconds), afterglowWorld time 31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place timesCountdown timer Measuring unit: 1/10 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-second increments,1-minute increments and 1-hour increments)5 daily alarms or one-time alarmsHourly time signalFull auto-calendar (to year 2099)12/24-hour formatButton operation tone on/offRegular timekeeping Analog: 2 hands (hour, minute (hand moves every 20 seconds)) Digital: Hour, minute, second, pm, month, date, dayAccuracy: ±30 seconds per monthApprox. battery life: 5 years on CR2016 
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