Astron GPS Solar Dual-Time Chronograph Limited Edition

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