Specifications: MOVEMENT: Caliber Number :4R36 Movement Type :Automatic with manual winding capacity Duration :Approx. 41 hours EXTERIOR : Case Material :Stainless steel Crystal :Hardlex LumiBrite :Lumibrite on hands and indexs Band Material :Silicone OTHER DETAILS : Water Resistance :10 bar Case Size Thickness : 13.4 ㎜ Diameter : 42.5 ㎜ Length : 46 ㎜ Other Specifications Screw case back See-through case back Unidirectional rotating bezel OTHER FEATURES: 24 jewels Day/Date display Stop second hand function