Nixon Men's 'Rollo 38' Quartz Stainless Steel and Leather Watch, Color:Black (Model: A9842315) Miyota Japanese quartz 3 hand movement with date function 38 mm 50 meters custom stainless steel case, hardened mineral crystal, double gasket crown, stainless steel screw down case back, and spring pin lugs Japanese-quartz Movement Case Diameter: 38mm Water resistant to 50m (165ft:in general, suitable for short periods of recreational swimming, but not diving or snorkeling