Basic InformationCase size (L W H)40.5 34 6.4 mmWeight48 gCase and bezel materialStainless steelBandStainless Steel Mesh BandAdjustable ClaspWater resistance50-meter water resistancePower supply and battery lifeApprox. battery life: 2 years on SR616SWExteriorGlassSapphire CrystalCompatible band size125 to 185 mm?Watch FeaturesAccuracyAccuracy: 20 seconds per monthOther featuresRegular timekeeping: Analog: 3 hands (hour, minute, second)Date display