Seiko

Founded by Kintaro Hattori in Tokyo. Made Japan’s first wristwatch in 1913 and the world’s first quartz wristwatch, the Astron, in 1969. Grand Seiko, from 1960, is its luxury line.

Kintaro Hattori opened a watch shop in Tokyo and started the Seikosha factory. Seiko made Japan's first wristwatch in 1913, and the factory was rebuilt after the 1923 earthquake.

Seiko was official timekeeper at the 1964 Tokyo Olympics, and the Astron of 1969 was the world's first quartz wristwatch. Grand Seiko became a brand of its own in 2017.

The first digit of the serial number gives the year within the decade and the second the month; calibre and reference numbers on the caseback.

• Clocks and watches
• Seiko Astron
• Seiko 5
• Seiko 62MAS
• Seiko 6309 Turtle