Case / bezel material: Resin Resin Band Resin Glass 50-meter water resistance 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 : 38.4×31.1×9mm Total weight : 22g