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.

5X Series Lineup

Seiko Astron 5X Series 2018 Limited Edition




Seiko Astron Executive Sports Line Novak Djokovic Limited Edition

The Novak Djokovic Limited Edition has a strong design that is perfect for adventurous world travelers. This model ingeniously captures the essence of Novak’s approach to tennis – power, precision, passion and grace – through the addition of design features unique to this GPS solar watch.

Executive Sports Line

Seiko Astron Executive Sports Line is a new sports design, made for people who want a watch that works equally well in the office and the great outdoors. This series offers all the functions of Seiko’s unique GPS Solar technology but with a new level of durability, legibility and water resistance.

Executive Line

Seiko Astron Executive Line. The watch, in a class of its own, is the perfect partner for a global traveller, who appreciates the elegant and refined design.

8X Series Dual-Time

Dual-Time caliber offers more proof that GPS Solar is a technology platform that delivers real, practical advantages that are appreciated by all.

8X Series Chronograph

The Astron Choronograph offers a 6 hour chronograph whose operation could not be more simple.

8X Series Big-Date

The Astron Big-Date brings to four the number of active GPS Solar calibers in the Astron range and adds a new note of relaxed elegance to the Astron design.

8X Series World-Time

Caliber 8X22 broadens the appeal of Astron still further, offering a slimmer case and a clean, uncluttered dial layout which allows the world traveler to see local time at a glance.


Seiko Store Finder

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

Store Finder

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