CASIO G SHOCK GMA S2100BS 4A

Band MaterialResinBattery LifeApproximately 3 yearsCountdown Timer FunctionCountdown Range: 24 hours, Measuring Unit: 1 second, Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)Dimensions46.2 x 42.9 x 11.2