Casio G-Shock Digital Watch GLS5600V-3 1/100-second stopwatch (ST1, ST2) Measuring capacity: 999:59&apos;59.99&quot; Measuring modes: Elapsed time, split time, 1st-2nd place times Other: Auto start (ST1 only) 12/24-hour format Accuracy: 15 seconds per month Approx. battery life 3 years on CR2025 Full auto-calendar (to year 2099)