Seiko Prospex x Automatic ft. Antarctica Monster aka Save The Ocean (STO) (Special Edition) Men Diver Round 200m Water Resistant Watch SRPG57K1 SRPG57 SRPG-57 SRPG-57K1 Explore the Seiko Prospex Antarctica Special Edition SRPG57K1 from the Save the Ocean collection, inspired by Antarctic ice floes with a stunning light blue penguin-track patterned dial. Built for adventure, this 200m water-resistant dive watch features a hardlex crystal, luminous hands, and a 41-hour automatic movement. A tribute to Arctic wildlife. Caliber Number / Movement 4R36 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 41 hours (+45 to -35 seconds per day) Crystal Hardlex crystal with magnifier Luminous LumiBrite on hands, indexes and bezel Case / Band Material Stainless steel case with stainless steel band (three-fold clasp with secure lock, push-button release with extender) 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. Antarctica Monster 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)