Seiko 5 Sports x Automatic ft. Mid-Field Series Men Formal Round 100m Water Resistant Watch SRPJ81K1 SRPJ81 SRPJ-81 SRPJ-81K1 Discover the Seiko 5 Sports Mid-Field Collection featuring 36mm field watches with classic numerals and pilot-style dials. Powered by the reliable 4R36 automatic movement with 40-hour power reserve and 100m water resistance. Perfectly sized at 36mm with 12.5mm thickness for traditional field watch appeal. Caliber Number / Movement 4R36 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 41 hours (+45 to -35 seconds per day) Crystal Hardlex crystal (curved) Luminous LumiBrite on hands and indexes Case / Band Material Stainless steel case with stainless steel band (three-fold clasp with push-button release) Water Resistance 100m / 10 bar Case Size Thickness: 12.5 mm Diameter: 36.4 mm Length: 44.4 mm Lug width: 18.0 mm Other Specifications Seiko 5 Sports x Automatic ft. Mid-Field Series Magnetic resistant (4,800 A/m) See-through back case Screw case back 24 jewels Day and date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)
