Seiko Astron x GPS Solar ft. 145th Anniversary aka Titanium Skyline (Limited Edition of 2,000 Pieces) Men Formal Hexagon 100m Water Resistant Watch HAB004J1 HAB004 HAB-004 HAB-004J1 Experience cutting-edge innovation with the Seiko Astron series, a premium collection of GPS solar timepieces engineered for global precision. Each model features a lightweight titanium case, sapphire crystal, and Seiko revolutionary GPS technology that automatically syncs to satellites anywhere on Earth. Powered by sunlight, these watches deliver perpetual accuracy without battery changes. Caliber Number / Movement 5X63 (solar powered) Power Reserve / Accuracy Approximately 6 months when fully charged (+/-15 seconds per month without GPS signal) Crystal Sapphire crystal (super-clear coating) Luminous LumiBrite on hands and indexes Case / Band Material Titanium (super-hard coating) case with titanium band (three-fold clasp with push-button release, smart adjuster function) Water Resistance 100m / 10 bar Case Size Thickness: 12.4 mm Diameter: 43.4 mm Length: 50.0 mm Lug width: Integrated Other Specifications Seiko Astron x GPS Solar ft. 145th Anniversary aka Titanium Skyline (Limited Edition of 2,000 Pieces) Made in Japan Additional silicone band inclusive LIMITED EDITION on the case back 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 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)
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