Movement Caliber Number 6R35 Movement Type Automatic with manual winding Accuracy +25 to -15 seconds per day Duration Approx. 70 hours Exterior Case Material Stainless steel (super hard coating) Crystal Curved sapphire crystal Crystal Coating Anti-reflective coating on inner surface LumiBrite LumiBrite on hands, index(es) and bezel Band Material Silicone Other Details Water Resistance 200m / 660ft diver's Case Size Thickness: 13.2 ㎜ Diameter: 42.7 ㎜ Length: 46.6 ㎜ Weight 111.0 g Other Specifications Screw case back Screw-down crown Three-fold clasp with secure lock Unidirectional rotating bezel Other Features 24 jewels Date display Stop second hand function