Seiko Prospex x Automatic ft. Sumo aka Asia-Pacific Exclusive aka Pink Lake (Limited Edition of 1,600 Pieces) Men Diver Round 200m Water Resistant Watch SPB541J1 SPB541 SPB-541 SPB-541J1 Discover the Seiko Prospex Nature Wonders 2025 Asia-Pacific Limited Edition dive watch series SPB539, SPB541, SPB543. Nicknamed for their stunning natural inspirations: Pink Lake (Australia), Blue Fire Crater (Indonesia), and Sandbanks of the Maldives. Featuring vibrant dials, 200m water resistance, 6R35 automatic movement with 70-hour power reserve. Limited to a total of 5,500 pieces worldwide. 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 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 Asia-Pacific Exclusive aka Pink Lake (Limited Edition of 1,600 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)