LED lightAuto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow Dual time 1/100-second stopwatchMeasuring capacity:0000"00~5959"99 (for the first 60 minutes)1:0000~99:5959 (after 60 minutes)Measuring unit:lap time (1/100 second (for the first 60 minutes), 1 second (after 60 minutes))split time (1/100 second (for the first 10 hours), 1 second (after 10 hours))Measuring modes: Elapsed time, lap/split times, 1st-2nd place timesMemory capacity: 60 records (used for lap times and split times) Countdown timerMeasuring unit: 1 secondCountdown range: 24 hoursCountdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)Other: Auto-repeat 3 multi-function alarms (with 1 snooze alarm) 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))Digital: Hour, minute, second, am/pm, month, date, day Accuracy:±30 seconds per month Approx. battery life: 3 years on CR1220 Size of case : 46.4×42.6×15.3mm Total weight : 41g