Counts up to 23:59:59, displays lap time, minutes, seconds, month, day, and date; daily alarm and hourly chime; 1/100-second precision (for first 30 minutes); 12- or 24-hour selectable clock with snooze feature; water-resistant, easy-to-hold design. Specifications: Digit height: 0.28", Display size: 0.82" x 0.43"; Unit size: 2.4" x 2" x 0.5"; Power source: 1–CR2016 battery.