The Triplett Model STW25 Stopwatch has a timing capacity of 23 hrs, 59 mins, 59.99 sec and an accuracy of ±2 sec/day. It features 3 stopwatch modes (Elapsed Timer, Split Time, Two Competitor Timer), 1/100th second resolution, 12/24 hour clock format and a tally counter (up to 3999). Built-in calendar displays year, month, date, and day and a backlight (5 seconds) for viewing at night or in dimly lit areas. Includes CR2032 battery and 51" (1.3m) lanyard.