Mineral Glass Magnetic Resistant Shock Resistant 200-meter water resistance Case / bezel material: Resin Resin Band LED light Auto light switch, selectable illumination duration, afterglow World time 29 time zones (48 cities coordinated universal time), city code display, 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 Others: 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)) Digital: Hour, minute, second, pm, month, date, day Accuracy: 15 seconds per month Approx. battery life: 2 years on CR1220 Size of case: 55 X 51.2 X 16.9 mm total weight: 72 g LED:Umber