The #SW100AY stopwatch counts up to 23:59:59 and displays the day, date, current time and lap time.
Daily alarm and hourly chime
1/100th of a second precision (for the first 30 minutes)
12/24-hour clock with snooze alarm
Water-resistant
NIST calibration is available
LCD size: 0.82 x 0.43 in. (21 x 11mm), with 0.28 in. (7mm) high digits
Power source: "CR2016" battery (included)