Power supply and battery life Approx. battery life: 2 years on CR1220 Glass Mineral Glass Compatible band size 145 to 215 mm Other Neobrite World time World time 29 time zones (48 cities + coordinated universal time), daylight saving on/off, home city/world time city swapping Stopwatch 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) Timer 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) Others: Auto-repeat Alarm/hourly time signal 5 daily alarms (with 1 snooze alarm) Hourly time signal Light LED light Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow Light color LED:Amber Calendar Full auto-calendar (to year 2099) Accuracy Accuracy: ±15 seconds per month Other features 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 Case size (L× W× H) 55 × 51.2 × 16.9 mm Weight 78 g