Seiko Prospex x Automatic ft. King Turtle aka Manta Ray aka Save The Ocean (STO) (Special Edition) Men Diver Tonneau 200m Water Resistant Watch SRPE39K1 SRPE39 SRPE-39 SRPE-39K1 Discover the Seiko Prospex SRPE39K1 automatic dive watch - featuring 200m water resistance, robust 4R36 movement with 41-hour power reserve, and striking Manta Ray dial. These professional divers include LumiBrite markers, unidirectional bezels, screw-down crowns, and day-date display in 45.0mm stainless steel cases. Built for underwater adventures with Seiko renowned reliability. Caliber Number / Movement 4R36 (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 stainless steel band (three-fold clasp with secure lock, push-button release with extender) Water Resistance 200m / 660ft diver Case Size Thickness: 13.2 mm Diameter: 45.0 mm Length: 47.7 mm Lug width: 22.0 mm Other Specifications Seiko Prospex x Automatic ft. King Turtle aka Manta Ray aka Save The Ocean (STO) (Special Edition) SPECIAL EDITION on the case back 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)