Casio General Men's Watches Edifice Chronograph EF-502D-1AVDF - WW 1-second stopwatch-Measuring capacity: 11:59'59, Measuring mode: Elapsed time Date display, Regular timekeeping, Analog: 3 hands (timekeeping hour and minutes, stopwatch seconds), 3 dials (timekeeping seconds, stopwatch hours and minutes) Accuracy: 20 seconds per month, Approx. battery life: 2 years on SR927W Size of case/total weight: 45.3 X 41.0 X 12.1 mm / 148 g