Seiko 5 Sports x Automatic ft. SKX Series aka Time Sonar Men Formal Round 100m Water Resistant Watch SRPJ47K1 SRPJ47 SRPJ-47 SRPJ-47K1 Discover the Seiko 5 Sports with its distinctive translucent dial and two-tone aluminum bezel, housed in a 42.5mm stainless steel case. Powered by the robust 4R36 automatic movement with 41-hour power reserve, day-date display, and LumiBrite illumination. Features a tinted mineral crystal, 100m water resistance, and a modern take on the classic Time Sonar design. 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, translucent dial with stainless steel band (three-fold clasp with secure lock, push-button release) 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 Time Sonar 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)