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Milestones:Electronic Quartz Wristwatch, 1969
Abstract After ten years of research and developmen
After ten years of research and development at Suwa Seikosha, a manufacturing company of Seiko Group, a team of engineers headed by Tsuneya Nakamura produced the first quartz wristwatch to be sold to the public. The Seiko Quartz-Astron 35SQ was introduced in Tokyo on December 25, 1969. Crucial elements included a quartz crystal oscillator, a hybrid integrated circuit, and a miniature stepping motor to turn the hands. It was accurate to within five seconds per month.
accurate to within five seconds per month.  +
Date Dedicated November 25, 2004  +
Dedication 56  +
Description Seiko Institute of Horology, Tokyo, Japan.
Seiko Institute of Horology, Tokyo, Japan. Dedication: 25 November 2004, IEEE Tokyo Section. After ten years of research and development at Suwa Seikosha, a manufacturing company of Seiko Group, a team of engineers headed by Tsuneya Nakamura produced the first quartz wristwatch to be sold to the public. The Seiko Quartz-Astron 35SQ was introduced in Tokyo on December 25, 1969. Crucial elements included a quartz crystal oscillator, a hybrid integrated circuit, and a miniature stepping motor to turn the hands. It was accurate to within five seconds per month.
accurate to within five seconds per month.  +
IEEE section Tokyo  +
Location Tokyo, Japan  +
Region number 10  +
Special citation false  +
StartYear 1969  +
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Milestones:Electronic Quartz Wristwatch, 1969 + , Milestones:Electronic Quartz Wristwatch, 1969 + , Milestones:Electronic Quartz Wristwatch, 1969 +
Categories Pages with a map rendered by the Maps extension , Computing and electronics , Oscillators , Milestones
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03:30:27, 31 December 2015  +
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"Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.
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