Variants of the Quartz-Astron, the world's first quartz watch | WatchUSeek Watch Forums
SEIKO WATCH | Our Heritage
The Seiko Quartz Watch That Broke Switzerland
A tribute to a watchmaking revolution. The 50th anniversary of the Quartz Astron is celebrated in a limited edition GPS Solar watch. | News | Seiko Watch Corporation
Hands-on with Seiko's (new) Quartz Astron – HOROLOGIUM
The birth of the quartz timepiece | THE SEIKO MUSEUM GINZA