Seiko Prospex x Automatic ft. King Samurai Men Diver Round 200m Water Resistant Watch SRPE37K1 SRPE37 SRPE-37 SRPE-37K1 The Seiko Prospex White King Samurai SRPE37 delivers bold dive watch performance with its striking white dial, 200m water resistance, and robust 4R36 automatic movement. Featuring LumiBrite markers, unidirectional bezel, screw-down crown, and 43.8mm stainless steel case, this professional tool watch combines precision and style. Built for adventure with 41-hour power reserve and Seiko legendary reliability. Caliber Number / Movement 4R35 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 41 hours (+45 to -35 seconds per day) Crystal Sapphire crystal with magnifier (anti-reflective coating) Luminous LumiBrite on hands, indexes and bezel Case / Band Material Stainless steel case, ceramic bezel insert with silicone band Water Resistance 200m / 660ft diver Case Size Thickness: 12.8 mm Diameter: 43.8 mm Length: 48.7 mm Lug width: 22.0 mm Other Specifications Seiko Prospex x Automatic ft. King Samurai Unidirectional rotating bezel Screw-down crown Screw case back 23 jewels Date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)