Caliber Number 4R38 Movement Type Automatic with manual winding Duration Approx. 41 hours Exterior Case Material Stainless steel Crystal Box-shaped Hardlex Band Material Calfskin Clasp Three-fold clasp with push button release Other Details Water Resistance 5 bar Case Size Thickness: 11.8 ㎜ Diameter: 40.5 ㎜ Length: 47.5 ㎜ Other Specifications An additional calf strap is included LIMITED EDITION on the case back Screw case back See-through case back Serial number engraved on the case back Other Features 24 jewels Stop second hand function