Astron (wristwatch)

Seiko Quartz-Astron 35SQ
TypeQuartz
DisplayAnalogue
IntroducedDecember 25, 1969
Quartz Movement of the Seiko Astron, 1969 (Deutsches Uhrenmuseum, Inv. Inv. 2010-006)

The Astron wristwatch, formally known as the Seiko Quartz-Astron 35SQ, was the world's first "quartz clock" wristwatch. It is now registered on the List of IEEE Milestones as a key advance in electrical engineering.