Seiko Prospex x Automatic ft. Mini Antarctica Tuna aka Save The Ocean (STO) (Special Edition) Men Diver Round 200m Water Resistant Watch SRPG59K1 SRPG59 SRPG-59 SRPG-59K1 Discover the Seiko Baby Tuna Antarctica SRPG59K1 - a rugged yet wearable dive watch inspired by the icy beauty of Antarctica. Featuring a 43.2mm stainless steel case, 200m water resistance, and a striking gradient blue dial with penguin footprints. Powered by the reliable 4R35 automatic movement, this special edition blends vintage Tuna DNA with modern comfort. Caliber Number / Movement 4R35 (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: 12.6 mm Diameter: 43.2 mm Length: 44.0 mm Lug width: 20.0 mm Other Specifications Seiko Prospex x Automatic ft. Mini Antarctica Tuna aka Save The Ocean (STO) (Special Edition) SPECIAL EDITION on the case back Unidirectional rotating bezel Screw-down crown Screw case back 23 jewels Date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)