Basic InformationCase size (L W H)47 41.7 9.5 mmWeight54 gCase and bezel materialStainless steelBandGenuine Leather BandWater resistance50-meter water resistancePower supply and battery lifeSolar poweredExteriorGlassSapphire crystal with anti-reflective coatingCompatible band size175 to 215 mmWatch FeaturesRun timeOperating time from full charge until hands stop: Approx. 4 monthsAccuracyAccuracy: 20 seconds per monthOther featuresRegular timekeeping: Analog: 3 hands (hour, minute, second)