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 Clasp Three-fold clasp with secure lock , push button release with extender Other Details Water Resistance 200m / 660ft diver's Case Size Thickness: 13.2 ㎜ Diameter: 40.5 ㎜ Length: 47.6 ㎜ Weight 181.0 g Other Specifications LIMITED EDITION on the case back 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