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 and index(es) Clasp Three-fold clasp with secure lock ,push button release Other Details Water Resistance 10 bar Case Size Thickness: 13.4 ? Diameter: 42.5 ? Length: 46 ? Weight 170.0 g Other Specifications Screw case back See-through case back Unidirectional rotating bezel Other Features 24 jewels Day/Date display Stop second hand function