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

High speed time zone adjustment. Time transfer function

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.



Photo of the dial of 5X Series

High speed time zone adjustment

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

Photo of the time transfer function: Buttons are attached at 2 and 4 o'clock on the case.

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 Lineup

Photo of SSH045J1

Seiko Astron 5X series Novak Djokovic 2020 Limited Edition

photo of sbxd002

The 1969 Quartz Astron 50th Anniversary Limited

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Photo of SSH019


Photo of SSH023


Photo of SSH024


Photo of SSH006J1



Photo of SSE174J1

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.

Photo of Executive Sports Line

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.

Photo of 8X Series Dual-Time

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.

Photo of 8X Series Big-Date

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.

Photo of 8X Series World-Time

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.



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