The Seiko Astron GPS Solar Dual-Time Chronograph HAB004J1 commemorates 145 years of Seiko watchmaking, combining the latest GPS Solar technology with a striking design inspired by precision engineering and modern travel. Limited to 2,000 pieces worldwide, this exclusive Astron represents the pinnacle of Seiko's technological expertise, pairing cutting-edge functionality with lightweight titanium construction and everyday practicality. 

Finished with a sophisticated silver-white dial accented by vivid blue sub-dials and a matching blue seconds track, the HAB004J1 offers a distinctive appearance that is both contemporary and unmistakably Astron.

Advanced GPS Solar Technology

At the heart of the HAB004J1 is Seiko's latest GPS Solar Calibre 5X63, allowing the watch to connect with GPS satellites to automatically adjust to your time zone anywhere in the world. Powered entirely by light, it never requires a battery change and maintains outstanding precision whether travelling internationally or worn daily.

The movement delivers:

• GPS Solar technology
• Automatic time zone adjustment
• Automatic and manual GPS time synchronisation
• Approx. 6-month power reserve when fully charged
• Power save mode of approximately 2 years
• Accuracy of ±15 seconds per month without GPS synchronisation
• Perpetual calendar correct until 28 February 2100
• Dual-time display
• 24-hour chronograph
• World time across 38 time zones
• Day display
• Power reserve indicator
• Time transfer function
• In-flight mode
• Automatic hand position alignment

Lightweight Titanium Construction

The 43.4mm case and integrated bracelet are crafted from titanium with Seiko's Super-Hard Coating, providing exceptional scratch resistance while remaining considerably lighter than stainless steel.

A scratch-resistant sapphire crystal with Super-Clear Coating ensures outstanding legibility from every angle, while Lumibrite-coated hands and indexes maintain excellent visibility in low-light conditions. The watch is water resistant to 10 bar (100 metres), making it equally suited to business travel and everyday adventures.

Designed for Modern Travellers

The HAB004J1 showcases the latest evolution of the Astron collection with an integrated bracelet and Seiko's new quick-change system, allowing the bracelet to be removed without tools.

Included with the watch is an additional blue and white silicone strap, offering a more relaxed sporting aesthetic while retaining the versatility expected of a luxury travel watch.

A Fitting Tribute to Seiko's Legacy

Since introducing the world's first quartz watch in 1969 and the world's first GPS Solar watch in 2012, Seiko has continually pushed the boundaries of watchmaking innovation. The HAB004J1 celebrates that pioneering spirit, combining advanced satellite technology, lightweight titanium construction and refined Japanese design in a limited edition worthy of the Astron name.

Whether crossing continents or worn closer to home, the HAB004J1 delivers uncompromising precision with effortless convenience.

Key Features

• Reference: HAB004J1
• Collection: Seiko Astron
• Seiko 145th Anniversary Limited Edition
• Limited to 2,000 pieces worldwide
• Seiko GPS Solar Calibre 5X63
• GPS satellite time synchronisation
• Solar powered – no battery changes required
• Approx. 6-month power reserve
• Approx. 2-year power save mode
• Accuracy: ±15 seconds per month (without GPS synchronisation)
• Dual-time display
• 24-hour chronograph
• World Time (38 cities)
• Perpetual calendar to 28 February 2100
• Day display
• Power reserve indicator
• Titanium case with Super-Hard Coating
• Titanium bracelet with Super-Hard Coating
• Additional blue and white silicone strap included
• Quick-change strap system
• Sapphire crystal with Super-Clear Coating
• Lumibrite hands and indexes
• Screw case back
• 43.4mm case diameter
• 12.4mm case thickness
• Easy-adjust three-fold clasp with push-button release
• Water resistant to 10 bar (100 metres)
• Magnetic resistance: 4,800 A/m
• Made in Japan