Seiko Astron GPS Solar Dual-Time Chronograph Limited Edition SSH180

High-speed, precision global timekeeping Extending the legacy of the Seiko Astron—the world’s first commercially available quartz watch—this 2025 Limited Edition is designed for a new generation of leaders, combining advanced innovation with contemporary style. Limited to 1,500 individually numbered pieces, it is powered by Seiko’s 5X83 caliber, which provides high-speed GPS dual-time and time-zone adjustment across 39 time zones, along with a chronograph capable of measuring elapsed time in 1/20-second increments. Additional functions include an AM/PM indicator, daylight-saving-time adjustment, power-save function, a perpetual calendar accurate through 2100, and a time-transfer function that switches the main-time and dual-time displays at the press of a button. Powered by light, the watch requires no battery replacement. The watch features a polygonal titanium bezel with a rose-gold finish and a brilliant black sapphire insert, topped by dual-curved sapphire crystal with super-clear coating. Its navy-blue patterned dial has a distinctive texture and improved contrast, while four vertically arranged subdials reinforce its sporty character. A date display and LumiBrite hands and markers provide enhanced visibility in low-light conditions. The lightweight titanium case and bracelet are finished with a super-hard coating, while black ceramic center links add a refined shine. Sleek lines, a slim profile, and a compact angular design give the watch a contemporary appearance. The bracelet is completed by a tri-fold push-button clasp with Seiko’s Smart Adjuster function. The watch is water-resistant to 10 bar, or 100 meters. Limited edition of 1,500 pieces Specifications Caliber Number: 5X83 Movement Type: GPS solar Precision: ±15 seconds per month (without receiving a GPS signal and at temperatures between 5°C and 35°C) Power Reserve: Operating for approx. 6 months (when fully charged), power save: approx. 2 years Jewels: 14 Overcharge prevention function Power save function Chronograph up to 12 hours in 1/20 second increments Perpetual calendar to February 28, 2100 World time function (38 time zones) Dual-time function (with AM/PM indication) Day display Power reserve indicator Time transfer function (Switching between the main-dial and sub-dial) GPS signal reception function (Time zone adjustment, automatic time adjustment, manual time adjustment) Satellite acquisition status display function Reception result display function DST (Daylight Saving Time) Function to prevent the GPS signal reception (in-flight mode) Automatic hand position alignment function Case Material: Titanium (super hard coating) with sapphire crystal bezel insert Case Size: Thickness: 14.4mm, Diameter: 44.3mm, Lug-to-lug: 50.0mm Crystal: Dual-curved sapphire crystal Crystal Coating: Super-clear coating LumiBrite: Lumibrite on hands and index(es) Clasp: Three-fold clasp with push button release (with Smart Adjuster function) Water Resistance: 10 bar (100 meters) Weight: 115.0g LIMITED EDITION on the case back Serial number engraved on the case back Screw case back