Specifications: Case / bezel material: Resin Resin Band 50-meter water resistance Resin Glass / Spherical Glass Dual time 1/100-second stopwatch Measuring capacity: 59'59.99'' Measuring mode: Elapsed time Daily alarm Hourly time signal Auto-calendar (28 days for February) 12/24-hour format Regular timekeeping Analog: 2 hands (Hour, minutes (hand moves every 20 seconds)) Digital: Hour, minutes, seconds, pm, month, date, day Accuracy: +-30 seconds per month Approx. battery life: 3 years on SR920W Size of case/total weight: 45 X 38.6 X 9.5 mm/30 g