Movement Caliber Number 4 R 36 Movement Type Automatic with manual winding capacity Duration Approx. 41 hours Exterior Case Material Stainless steel (hard coating) Crystal Hardlex Band Material Calfskin Other Details Water Resistance 10 bar Case Size Thickness: 13.4 ㎜ Diameter: 42.5 ㎜ Length: 46 ㎜ Weight 94.0 g Other Specifications LIMITED EDITION on the case back Screw case back See through case back Serial number engraved on the case back Unidirectional rotating bezel • Beats per Hour 21,600 bph 6 bps) • Manual Winding