Seiko Astron watches
The Seiko Astron family covers 5 models and 5 references, with case sizes from 43.3 mm to 44.1 mm.
5 models · 5 references
About the Seiko Astron
The Astron name goes back to 25 December 1969, when Seiko marketed the Quartz Astron, which it describes as the world's first quartz watch. Seiko revived the name in 2012 for its first Astron GPS Solar watch. Current Astron GPS Solar models connect to the GPS network to set the time zone at the press of a button and run on light alone. Most cases are titanium with a super-hard coating. Calibres include the 3X62, the 5X53 dual-time, the 5X63 dual-time chronograph and the 5X83, and most run for about six months on a full charge. Seiko lists cases from 39 mm to 44.1 mm, water resistant to 10 or 20 bar.
Sources: Seiko Astron, The Astron History, GPS Solar Astron 10th Anniversary Limited Edition, Seiko Astron HAB001, Manufacturer product page, Manufacturer product page, Manufacturer product page, Manufacturer product page, Manufacturer product page
Movements
Key movements
- Seiko calibre 5X83 5 references
Questions
Seiko Astron questions
How many Seiko Astron watches are on Watchnik?
Watchnik lists 5 Seiko Astron models and 5 references.
What case sizes do Seiko Astron watches come in?
Recorded case diameters run from 43.3 mm to 44.1 mm across the 5 references.
Which movement is used most in Seiko Astron watches?
The Seiko calibre 5X83 appears in the most references, 5 of them.
Sources
Sources and last updated
Specifications are compiled from watch database records and manufacturer information; missing values are shown as not yet recorded, never estimated. How we source our data




