Seiko 5 Sports x Automatic ft. SKX Series aka 55th Anniversary aka Super Cub (Limited Edition of 7,500 Pieces) Men Formal Round 100m Water Resistant Watch SRPK37K1 SRPK37 SRPK-37 SRPK-37K1 Own the exclusive Seiko 5 Sports SKX Super Cub Limited Edition SRPK37K1 - only 7,500 pieces made! This automatic watch features a 4R36 movement with 41-hour power reserve, hardlex crystal, and 100m water resistance. The stainless steel case pairs with a nylon band, while LumiBrite ensures visibility. Includes day-date display, unidirectional bezel, and hacking seconds. A must-have for collectors! 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 and indexes Case / Band Material Stainless steel case with fabric (nylon) band Water Resistance 100m / 10 bar Case Size Thickness: 13.4 mm Diameter: 42.5 mm Length: 46.0 mm Lug width: 22.0 mm Other Specifications Seiko 5 Sports x Automatic ft. SKX Series aka 55th Anniversary aka Super Cub (Limited Edition of 7,500 Pieces) LIMITED EDITION on the case back Serial number engraved on the case back Magnetic resistance (4,800 A/m) Unidirectional rotating bezel See-through back case Screw case back 24 jewels Day and date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)