LED LIGHT 1/100-SECOND STOPWATCHMEASURING CAPACITY: 59'59.99"MEASURING MODES: ELAPSED TIME, SPLIT TIME, 1ST-2ND PLACE TIMES DAILY ALARM HOURLY TIME SIGNAL AUTO-CALENDAR (SET AT 28 DAYS FOR FEBRUARY) 12/24-HOUR FORMAT REGULAR TIMEKEEPING: HOUR, MINUTE, SECOND, PM, DATE, DAY ACCURACY: ±30 SECONDS PER MONTH APPROX. BATTERY LIFE: 7 YEARS ON CR2016