wristwatch Rolex -> Oyster Perpetual -> GMT Master II Oyster Perpetual BrandRolex SeriesOyster Perpetual TitleGMT Master II Country of originSwitzerland Type of watchmen`s/gen`s case materialSteel Waterproof100 m case diameter40 mm Case thickness (mm)12 mm Metal BraceletClocksecond handdateWatches