Seiko Prospex x Automatic ft. 1968 Heritage Modern Re-Intepretation aka Marinemaster GMT aka Save The Ocean (STO) (Special Edition) aka Watchmaking 110th Anniversary (Limited Edition of 4,000 Pieces) Men Diver Round 200m Water Resistant Watch SPB385J1 SPB385 SPB-385 SPB-385J1 Discover the Seiko Prospex Diver GMT, a remarkable timepiece that pays homage to the rich heritage while embracing modern technology. This watch, inspired by the iconic 1968 Diver, features a robust design, exceptional water resistance, and a striking Save the Ocean motif. With its precise GMT functionality, it is perfect for adventurers and watch enthusiasts alike. Caliber Number / Movement 6R54 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 72 hours (+25 to -15 seconds per day) Crystal Sapphire crystal (anti-reflective coating) Luminous LumiBrite on hands, indexes and bezel Case / Band Material Stainless steel (super hard coating) 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: 12.9 mm Diameter: 42.0 mm Length: 48.6 mm Lug width: 20.0 mm Other Specifications Seiko Prospex x Automatic ft. 1968 Heritage Modern Re-Intepretation aka Marinemaster GMT aka Save The Ocean (STO) (Special Edition) aka Watchmaking 110th Anniversary (Limited Edition of 4,000 Pieces) Made in Japan Additional fabric (polyster) band inclusive LIMITED EDITION on the case back Serial number engraved on the case back Magnetic resistance (4,800 A/m) Unidirectional rotating bezel Screw-down crown Screw case back 24 jewels Date and 24-hour (GMT dual time) display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)