Case size (L?? W?? H): 42.8 ?? 39 ?? 14.7 mm Weight: 33 g Case and bezel material: Resin Resin Band Shock Resistant 100-meter water resistance Battery: CR1616 Glass Mineral Glass Compatible band sizWorld time World time 29 time zones (30 cities), daylight saving on/off 1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times 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) 5 daily alarms Hourly time signal LED backlight (Super Illuminator) Illumination duration (2 seconds), afterglow Light color LED:White Full auto-calendar (to year 2099) Mute feature Button operation tone on/off Accuracy: ??30 seconds per month Other features 12/24-hour format Regular timekeeping: Hour, minute, second, am/pm, month, date, daye: 125 to 180 mm