Seiko Astron x GPS Solar ft. Dual-Time Chronograph ft. Future Innovation (Limited Edition of 1,200 Pieces) Men Formal Round 100m Water Resistant Watch SSH183J1 SSH183 SSH-183 SSH-183J1 Discover the Seiko Astron SSH183J1 GPS Solar 2025 Limited Edition, a visionary timepiece limited to 1,200 pieces. Featuring a super-hard-coated titanium case, a dial inspired by high-speed light, and vibrant neon orange accents. Powered by the advanced Caliber 5X83 Dual-Time GPS Solar movement for unparalleled global accuracy and a 6-month power reserve. Caliber Number / Movement 5X83 (solar powered) Power Reserve / Accuracy Approximately 6 months when fully charged (+/-15 seconds per month without GPS signal) Crystal Sapphire crystal (dual-curved, super-clear coating) Luminous LumiBrite on hands and indexes Case / Band Material Titanium (super-hard coating) case, ceramic / aluminium bezel with titanium / ceramic band (three-fold clasp with push-button release, smart adjuster function) Water Resistance 100m / 10 bar Case Size Thickness: 13.4 mm Diameter: 43.4 mm Length: 49.5 mm Lug width: Integrated Other Specifications Seiko Astron x GPS Solar ft. Dual-Time Chronograph ft. Future Innovation (Limited Edition of 1,200 Pieces) Made in Japan Magnetic resistance (4,800 A/m) Allergy-safe metal Screw case back DST (daylight saving time) World time function (38 cities) Time transfer function (switching between main and sub-dial) Perpetual calendar (to 28 February 2100) Chronograph up to 12 hours in 1/20-second increment Power reserve indicator Overcharge prevention function Power saving function (hands stop to save power when left in the dark) Automatic hand position alignment function Day, date, 24-hour and dual-time display Regular timekeeping (analog display) GPS Function GPS signal reception function (time zone adjustment, automatic time adjustment, manual time adjustment) Reception result display function Satellite acquisition status display function Function to prevent the GPS signal reception (in-flight mode)