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Quartz movement of the Seiko Astron, 1969. The quartz crisis (Swiss) or quartz revolution (America, Japan and other countries) was the advancement in the watchmaking industry caused by the advent of quartz watches in the 1970s and early 1980s, that largely replaced mechanical watches around the world.
1970: Girard-Perregaux presented its first wristwatch to the world to be equipped with a quartz movement and the following year a second one which vibrates at 32,768 hertz, the frequency remaining the universal standard for quartz watches today. [13] [14]
At the end of the 1970s, the Swiss watch industry was affected by the quartz crisis. Japanese watchmakers supplied the world market with large quantities of quartz watches. [1] Rolex responded by introducing a new line of watches, producing the Datejust Oysterquartz.
The first production watches were introduced to the market in 1970 very shortly after the world's first commercial quartz wristwatch, the Seiko-Quartz Astron 35SQ in December 1969. The beta 21 is noteworthy and significantly important to the history of watch making as well as the Astron as it marked the first quartz watch produced on an ...
In the early 1970s, Cortébert suffered deeply from the quartz revolution sweeping the world watch industry. The representatives of Cortébert in Italy bought the Perseo brand name from Cortébert and continue today as an independent company. Cortébert closed in the early 1970s and production ceased. [1]
In 2019, Citizen Watch advanced the accuracy of a quartz watch to +/- 1 second a year. [47] The improved accuracy was achieved by using an AT-cut crystal which oscillates at 8.4 MHz (8,388,608 Hz). The watch maintains its greater accuracy by continuously monitoring and adjusting for frequency and temperature shifts once every minute.
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