Shock resistant Magnetic resistant LED light Auto light switch, selectable illumination duration, afterglow World time 29 time zones (48 cities + coordinated universal time), daylight saving on/off Home city/world time city swapping 1/1000-second stopwatch Measuring Capacity: 99:59'59.999'' Measuring Modes: Elapsed time, lap time, split time Other: Speed (0 to 1998 units/hour), distance input (0.0 to 99.9) Countdown 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) Other: Auto-repeat 5 daily alarms (with 1 snooze alarm) Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Regular timekeeping Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (speed) Digital: Hour, minute, second, pm, month, date, day Accuracy: ±15 seconds per month Module: 5425 Band length approx. 145mm - 215mm Case size approx. 49mm x 45.9mm x 15.8mm