Seiko Prospex x Automatic ft. Sumo aka The Black Series (Limited Edition of 7,000 Pieces) Men Diver Round 200m Water Resistant Watch SPB125J1 SPB125 SPB-125 SPB-125J1 Discover the Seiko Sumo, a bold watch that combines striking design with exceptional craftsmanship. Its 45mm stainless steel case offers a robust yet comfortable fit, complemented by a uni-directional rotating bezel. Powered by the reliable Caliber 6R35 automatic movement, it boasts a 70-hour power reserve and smooth operation. The sapphire crystal dial features lumibrite hands for low-light visibility and a practical date function. With 200 meters of water resistance, this watch is perfect for any adventure, making it a favorite among enthusiasts. Caliber Number / Movement 6R35 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 70 hours (+25 to -15 seconds per day) Crystal Sapphire 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: 12.9 mm Diameter: 45.0 mm Length: 52.6 mm Lug width: 20.0 mm Other Specifications Seiko Prospex x Automatic ft. Sumo aka The Black Series (Limited Edition of 7,000 Pieces) Made in Japan LIMITED EDITION on the case back Serial number engraved on the case back Unidirectional rotating bezel Screw-down crown Screw case back 24 jewels Date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)