The world’s first GPS solar watch. By connecting to the GPS network, the Astron adjusts at the touch of a button to your time zone and, by taking all the energy it needs from light alone, never needs a battery change.

5X Series

5X Series

Astron GPS Solar communicates with the GPS network and adjusts to your time zone anywhere on Earth. With high speed time zone adjustment and the time transfer function, the new Astron 5X is the most advanced in history.



High speed time zone adjustment

A completely new caliber with “high speed time zone adjustment” and a “time transfer function” capability.

Time transfer function

The “time transfer function” allows you to switch, simply and instantly, the display of home and destination times between the main dial and the sub dial.

3X/5X series topics

Story - Reason for choosing Seiko Astron

Story - Turning Point for the Seiko Astron

Story - The remarkable achievement of the Seiko Quartz Astron lives on.

Limited Edition inspired by the KOJIMA PRODUCTIONS’ icon Ludens

Kintaro Hattori 160th Anniversary Limited Edition

Seiko 140th Anniversary Limited Edition

Two black cased Astron GPS Solar creations, inspired by the nebulae of deep space



Seiko Store Finder

The Store Finder can help you find your favorite Seiko timepieces around the world. Find a store near you.

Store Finder

Special Page