Seiko Criteria x Automatic ft. Military (Limited Edition of 1,500 Pieces) Men Formal Round 100m Water Resistant Watch SRPC77K1 SRPC77 SRPC-77 SRPC-77K1 Seiko Criteria Military - Robust 45mm automatic watch with sapphire crystal and 100m water resistance. Features luminous markers, day/date display, and durable polyester strap. Powered by reliable 4R36 movement (41h power reserve) with exhibition case back. Built for precision with military-inspired durability and Japanese craftsmanship. Caliber Number / Movement 4R36 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 41 hours (+45 to -35 seconds per day) Crystal Sapphire crystal Luminous LumiBrite on hands and indexes Case / Band Material Stainless steel case with fabric (polyester) band Water Resistance 100m / 10 bar Case Size Thickness: 13.0 mm Diameter: 45.0 mm Length: 51.5 mm Lug width: 22.0 mm Other Specifications Seiko Criteria x Automatic ft. Military (Limited Edition of 1,500 Pieces) LIMITED EDITION on the case back Serial number engraved on the case back See-through back case Screw case back 24 jewels Day and date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)