1. The HAB004 is a limited-edition Seiko Astron GPS solar watch with a distinctive light silver dial and blue accents, commemorating Seiko’s 145th anniversary.
2. It features a robust 43.4mm titanium case with a new octagonal bezel, combining enhanced wearability and innovative design.
3. Powered by Seiko’s high-performance Caliber 5X63, it offers dual-time tracking, perpetual calendar, GPS synchronization, and up to 6 months of solar battery life.
4. The watch includes Seiko’s Quick-Change system for easy strap swaps, offering versatility with a titanium bracelet and optional silicone strap.
5. Launching in June across multiple regions, it is a limited edition with specific pricing details.
Introduction to the Seiko HAB004
Alongside the trio of new Astron GPS solar watches that was recently announced, Seiko was apparently holding one more variant up its sleeve. Meet the HAB004: a limited-edition model launching as part of the second series of watches commemorating Seiko’s 145th anniversary. This watch is like a special piece, designed to celebrate a long history but also bring new features and style to the collection.
Design and Aesthetic
The Seiko Astron GPS solar HAB004 shares the exact same skeleton as the standard HAB001, HAB002, and HAB003 models. You’re getting a 43.4mm titanium case treated with a super-hard coating, topped with a new two-piece octagonal bezel that keeps the watch’s center of gravity low for better comfort. What catches the eye the most is its color scheme which is a real departure from the rest of the lineup.
- Light silver dial with a geometric pattern of interlocking triangles
- Striking blue accents inspired by Seiko Blue
The beautiful dial is contrasted by vibrant blue details seen on the subdials, chapter rings, and the seconds track, making it stand out elegantly.
Technical Specs and Power
Powered by Seiko’s new in-house Cliber 5X63, the HAB004 is described as the most powerful solar GPS movement the company has made. It features dual-time tracking combined with a perpetual calendar, set to run through the year 2100. Its GPS functionality can receive signals from four or more satellites to determine your location and automatically sync to your local time zone when you land at any destination. The watch offers up to 6 months of battery life on solar charge, making it quite reliable.
- GPS signal reception from four or more satellites
- Perpetual calendar up to year 2100
- Up to 6 months of solar-powered battery life
- Water resistance of 10 bar
- Anti-magnetic rating of 4,800 A/m
Features and Versatility
Like its siblings, the HAB004 features Seiko’s innovative Quick-Change band system, making it effortless to switch bands with just a push of a button. This clever addition allows for easy customization, ideal if you want to switch to the sporty blue-and-white silicone strap included in the box for a more casual, energetic look. The design promises practicality combined with style, making it versatile for various occasions.
The Seiko Astron 145th Anniversary Limited Edition is set to launch in Japan, the US, the UK, Australia, and Europe in June. Pricing varies by region, making it accessible across different markets, but details on specific prices were not shared in the initial reveal.


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