Seiko Presage x Automatic ft. Sharp Edged Series aka Zero Halliburton (Limited Edition of 2,000 Pieces) Men Formal Round 100m Water Resistant Watch SPB277J1 SPB277 SPB-277 SPB-277J1 Seiko collaborates with Zero Halliburton for these limited-edition Presage Sharp Edged watches, featuring aviation-inspired cases, geometric Asanoha dials, and the 6R35 movement (70h power reserve). With sapphire crystals, 100m water resistance, and sleek 39.3mm designs, they fuse Japanese craftsmanship with American travel heritage. Caliber Number / Movement 6R35 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 70 hours (+25 to -15 seconds per day) Crystal Sapphire crystal (anti-reflective coating) Luminous LumiBrite on hands and indexes Case / Band Material Stainless steel (super hard coating) case with stainless steel band (three-fold clasp with push-button release) Water Resistance 100m / 10 bar Case Size Thickness: 11.1 mm Diameter: 39.3 mm Length: 47.2 mm Lug width: 20.0 mm Other Specifications Seiko Presage x Automatic ft. Sharp Edged Series aka Zero Halliburton (Limited Edition of 2,000 Pieces) Made in Japan LIMITED EDITION on the case back Serial number engraved on the case back See-through case back Screw case back 24 jewels Date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)