Seiko 5 Sports x Automatic ft. SKX Series Men Formal Round 100m Water Resistant Watch HDB004K1 HDB004 HDB-004 HDB-004K1 Discover the Seiko 5 Sports HDB004 and HDB005, where iconic SKX-inspired design meets modern mechanical watchmaking. Their bold stainless-steel cases, sculpted bezels, curved hardlex crystal and LumiBrite detailing create a dynamic sports silhouette. Powered by automatic Caliber 4R36 with manual winding, day-date display and a transparent case back, they unite heritage with everyday performance. 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 secure lock, push-button release) Water Resistance 100m / 10 bar Case Size Thickness: 14.2 mm Diameter: 42.5 mm Length: 46.0 mm Lug width: 22.0 mm Other Specifications Seiko 5 Sports x Automatic ft. SKX Series Magnetic resistance (4,800 A/m) Unidirectional rotating bezel See-through case back Screw case back 24 jewels Day and date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)
