Movement Caliber Number 4R36 Movement Type Automatic with manual winding Duration Approx. 41 hours Exterior Case Material Stainless steel Crystal Hardlex LumiBrite LumiBrite on hands, indexes and bezel Clasp Three-fold clasp with secure lock , push button release with extender Other Details Water Resistance 200m / 660ft diver's Case Size Thickness: 13.4 ㎜ Diameter: 45 ㎜ Weight 195.0 g Other Specifications Screw case back Screw-down crown Unidirectional rotating bezel Other Features 24 jewels Day/Date display Stop seconds hand function