The Astron GPS Solar Dual-Time Chronograph Celebrates Seiko’s Centenary

In a world where precision and innovation set the tempo of time, Seiko opens a new chapter in watchmaking history with its latest masterpiece: the Astron GPS Solar Dual-Time Chronograph. This model follows in a line of remarkable innovations, much like the Seiko Astron GPS Solar, which celebrates a decade of excellence with limited editions inspired by cherry blossoms and a starry sky. Let’s explore how this revolutionary watch celebrates a century of excellence and innovation.
A legacy of innovation: The Seiko Astron saga
From 2012 to today: the evolution of the Astron
In 2012, Seiko made waves in the watch industry with the launch of the Astron GPS Solar, a watch capable of adjusting to any time zone at the push of a button by connecting to GPS satellites. Powered exclusively by light, it marked a turning point in electronic watchmaking.

The birth of calibre 5X83
Innovation didn’t stop there. In 2024, Seiko introduced a new movement, calibre 5X83, combining Dual-Time technology with a chronograph function—an industry first for the brand. This breakthrough underscores Seiko’s ongoing commitment to innovation.
Calibre 5X83: unmatched precision
Automatic adjustment and chronograph function
Calibre 5X83 stands out for its ability to automatically synchronise with GPS satellites, enabling precise time-zone adjustment. Its dual-time operation, enhanced by a chronograph, pays tribute to the innovative spirit of Kintaro Hattori, Seiko’s founder.
A design that tells a story
The Kintaro Hattori limited edition, with its black case, sunray-pattern dial and gold accents, evokes a view of the Earth at night as seen from space. This look, combined with a ceramic-and-titanium bezel, highlights the union of tradition and futuristic technology.

The commemorative edition: celebrating the centenary
More than a watch, a legacy
The Astron GPS Solar Dual-Time Chronograph doesn’t merely celebrate technological innovation; it also honours Seiko’s 100th anniversary. With only 1,000 pieces available, it’s a piece of history on the wrist.
A unique presentation box for a unique anniversary
Each watch is presented in a special box, accompanied by an extra-durable silicone strap and a commemorative pin, underscoring the exclusivity and significance of this limited edition.
Prices
- Kintaro Hattori Limited Edition (SSH156): €4,000
- Models SSH151 and SSH153: €2,600 each
- Model SSH155: €2,800

Time reinvented by Seiko
The Astron GPS Solar Dual-Time Chronograph is more than just a watch; it is a symbol of Seiko’s ongoing innovation and a tribute to its rich heritage. By celebrating the brand’s centenary with this groundbreaking creation, Seiko isn’t simply looking back with pride—it is looking ahead with determination and innovation.
In the world of luxury and high-tech watches, Seiko’s Astron GPS Solar Dual-Time Chronograph stands out as a work of technological art, marking both the past and the future of watchmaking. Its launch is not only a key moment for Seiko, but also an important milestone in the history of global horology.





