Caliber Number 4R36 Automatic with manual winding Duration Approx. 41 hours Exterior Case Material Stainless steel Crystal Hardlex LumiBrite Lumibrite on hands and indexes 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