1960's Bulova Accutron 214

In 1960 Bulova introduced the Accutron 214. Unique for its day, in a world still dominated by mechanical watches and clocks, the Accutron set a new standard for watch accuracy. With its electronically (battery) driven tuning fork driving the gear, it made escapements and balance wheels obsolete. First there was the Accutron tuning fork mechanism, and only later came quartz.