Seiko Astron x GPS Solar ft. Dual-Time Chronograph aka Nexter Series aka 100th Anniversary (Limited Edition of 1,200 Pieces) Men Formal Round 100m Water Resistant Watch SSH158J1 SSH158 SSH-158 SSH-158J1 Celebrate Seiko 100th Anniversary with this limited edition GPS Solar watch, inspired by Earth brilliance from space. Features a stunning gradient dial, pink gold accents, and two-tone ceramic-titanium bezel. The globe-engraved case back honors Seiko legacy of innovation. Powered by light with world-time accuracy - a tribute to timeless excellence. 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) / ceramic case, ceramic / titanium bezel with titanium / ceramic band (three-fold clasp with push-button release, smart adjuster function) Water Resistance 100m / 10 bar Case Size Thickness: 14.1 mm Diameter: 43.4 mm Length: 49.5 mm Lug width: Integrated Other Specifications Seiko Astron x GPS Solar ft. Dual-Time Chronograph aka Nexter Series aka 100th Anniversary (Limited Edition of 1,200 Pieces) Made in Japan LIMITED EDITION on the case back Serial number engraved 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, 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)