Details:Case size (L?? W?? H)51 ?? 47.1 ?? 11.3 mmWeight145 gCase and bezel materialCase / bezel material: Stainless steelBandStainless Steel BandOne-touch 3-fold ClaspWater resistance100-meter water resistancePower supply and battery lifeApprox. battery life: 3 years on SR920SWStopwatch1-second stopwatch Measuring capacity: 9'59AccuracyAccuracy: ??20 seconds per monthOther featuresDate displayRegular timekeeping: Analog: 3 hands (hour, minute, second), 3 dials (stopwatch minutes, stopwatch seconds, 24-hour)