Caliber Number 4R35 Movement Type Automatic with manual winding capacity Duration Approx. 41 hours Exterior Case Material Stainless steel Crystal Sapphire crystal Crystal Coating Anti-reflective coating on inner surface LumiBrite Lumibrite on hands, indexs and bezel Band Material Silicone Other Details Water Resistance 200m / 660ft diver's Case Size Thickness: 12.8 Diameter: 43.8 Length: 48.7 Other Specifications Screw case back Screw-down crown Unidirectional rotating bezel Other Features 23 jewels Date display Stop second hand function