Seiko 5 Sports x Automatic ft. SKX Series aka 55th Anniversary Ultraseven (Limited Edition of 3,400 Pieces) Men Casual Round 100m Water Resistant Watch SRPJ79K1 SRPJ79 SRPJ-79 SRPJ-79K1 Discover the Seiko 5 Sports 55th Anniversary Ultraseven Limited Edition SRPJ79, celebrating the iconic Ultraman spinoff. Features a silver / black dial with TDF-UG inscription, red seconds hand, and exhibition case back with Ultraseven silhouette. Includes Terrestrial Defense Force nato strap and special presentation tin. Powered by the 4R36 automatic movement. 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, indexes and bezel 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 Super Cub (Limited Edition of 5,000 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)