SPB187 Exclusive In-Store Model Movement Caliber Number 6R35 Movement Type Automatic with manual winding capacity Accuracy +25 to -15 seconds per day Exterior Case Material Stainless steel (super hard coating) Crystal Sapphire crystal Crystal Coating Anti-reflective coating on inner surface LumiBrite Lumibrite on hands, indexes 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: 12.5 ㎜ Diameter: 42 ㎜ Length: 48.8 ㎜ Weight 186.0 g Bracelet Length 200 ㎜ Other Specifications Screw case back Screw-down crown Three-fold clasp with secure lock Unidirectional rotating bezel Other Features 24 jewels Date display Stop seconds hand function *This item is BRAND NEW and will come with the original box and papers. We are authorized SEIKO dealers, which means you will receive the manufacturer's warranty with your purchase.