Seiko Prospex x Automatic ft. Samurai Men Diver Round 200m Water Resistant Watch SRPF07K1 SRPF07 SRPF-07 SRPF-07K1 SRPB55K1 SRPB55 SRPB-55 SRPB-55K1 Experience the Seiko Prospex Samurai - a 200m water-resistant dive watch with bold angular case design. Features 4R35 automatic movement (41h power reserve), hardlex crystal, and LumiBrite lume. The 43.8mm stainless steel case with metal buckle and loop offers professional dive performance with striking aesthetics. Caliber Number / Movement 4R35 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 41 hours (+45 to -35 seconds per day) Crystal Hardlex crystal Luminous LumiBrite on hands, indexes and bezel Case / Band Material Stainless steel (hard coating) case with silicone band Water Resistance 200m / 660ft diver Case Size Thickness: 13.4 mm Diameter: 43.8 mm Length: 48.7 mm Lug width: 22.0 mm Other Specifications Seiko Prospex x Automatic ft. Samurai Unidirectional rotating bezel Screw-down crown Screw case back 23 jewels Date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)