LED lightSelectable illumination duration (1.5 seconds or 3 seconds), afterglow World time31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.) 1/100-second stopwatchMeasuring capacity: 5959.99Measuring modes: Elapsed time, split time, 1st-2nd place timesDirect timing start from the timekeeping mode Countdown timerMeasuring unit: 1 secondCountdown range: 24 hoursCountdown start time setting range: 1 to 24 hours (1-minute increments and 1-hour increments) Counter (Keep track of a count up to 999) 5 daily alarms Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off Regular timekeepingAnalog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (mode)Digital: Hour, minute, second, pm, month, date, day Accuracy: ±30 seconds per month Approx. battery life: 2 years on SR726W × 2 Size of case : 49.3×44×15.4mm Total weight : 45g