Seiko Prospex x Solar ft. Speedtimer Chronograph aka Blackout (Limited Edition of 4,000 Pieces) Men Formal Round 100m Water Resistant Watch SFJ007P1 SFJ007 SFJ-007 SFJ-007P1 Introducing the Prospex Speedtimer, perfect for adventurers who prioritize style and precision. It features the solar chronograph 8A50 movement, a dial with subdials, and lumibrite hands for visibility. Measuring time in 1/100-second increments, it charges from any light source with a 6-month power reserve. With user-friendly pushers, a durable sapphire crystal, and a robust stainless steel case, it is water-resistant up to 100 meters. Caliber Number / Movement 8A50 (solar powered) Power Reserve / Accuracy Approximately 6 months when fully charged (+/-15 seconds per month) Crystal Sapphire crystal (curved, anti-reflective coating) 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: 12.9 mm Diameter: 42.0 mm Length: 48.3 mm Lug width: 20.0 mm Other Specifications Seiko Prospex x Solar ft. Speedtimer Chronograph aka Blackout (Limited Edition of 4,000 Pieces) LIMITED EDITION on the case back Serial number engraved on the case back Screw case back Battery life warning function Overcharge prevention function Chronograph up to 60 minutes in 1/100-second increment Regular timekeeping (analog display)