Seiko Prospex x Automatic ft. Monster Men Diver Round 200m Water Resistant Watch SRPD27K1 SRPD27 SRPD-27 SRPD-27K1 Explore the Seiko Monster, a bold and rugged dive watch with a striking dial and Seiko reliable 4R36 automatic movement. Featuring a robust stainless steel case, hardlex crystal, 200m water resistance, and iconic Monster styling, this watch delivers performance and attitude. Perfect for adventurers and watch enthusiasts alike! Caliber Number / Movement 4R36 (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 case with silicone band Water Resistance 200m / 660ft diver Case Size Thickness: 13.4 mm Diameter: 42.4 mm Length: 49.4 mm Lug width: 20.0 mm Other Specifications Seiko Prospex x Automatic ft. Monster Unidirectional rotating bezel Screw-down crown Screw case back 24 jewels Day and date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)