Movement Caliber Number 4R35 Movement Type Automatic with manual winding Duration Approx. 41 hours Exterior Case Material Stainless steel Crystal Sapphire crystal LumiBrite Lumibrite on hands and index(es) Clasp Three-fold clasp with push button release Other Details Water Resistance 20 bar Case Size Thickness: 11.7 ㎜ Diameter: 42.4 ㎜ Length: 45.2 ㎜ Weight 150.0 g Bracelet Length 200 ㎜ Other Specifications Rotating bezel Screw case back Screw-down crown Other Features 23 jewels Date display Stop second hand function