Word: accutrons
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Dates: during 1960-1960
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...above middle C. Each vibration pushes a jewel-tipped spring against a pinhead-sized wheel whose rim has 300 microscopic ratchet teeth. The turning of this wheel moves the hands of the watch through a conventional gear train. Bulova guarantees that its electronic watch, which it calls the Accutron. will not gain or lose more than one minute per month. Price of present-model watches...