Specifications: 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 indexes Band Material Silicone Other Details Water Resistance 10 bar Case Size Thickness: 13.4 ㎜Diameter: 42.5 ㎜Length: 46 ㎜ Weight 100.0 g Other Specifications Screw case back See-through case back Unidirectional rotating bezel Other Features 24 jewels Day/Date display Stop seconds hand function