There was the Bulova Accutron,[1] which used a 360 Hz tuning fork. This was the most accurate watch in the 1960s. Here's high frame rate video of the mechanism

There was the Bulova Accutron,[1] which used a 360 Hz tuning fork. This was the most accurate watch in the 1960s. Here's high frame rate video of the mechanism.[2] It's an electrically powered tuning fork ratcheting a toothed wheel forward. This is backwards from an escapement clock or watch. Worked fine, used by astronauts, made obsolete by quartz watches. [1] https://en.wikipedia.org/wiki/Bulova https://en.wikipedia.org/wiki/Bulova [2] https://youtu.be/CPS7aNCAwAA?t=194 https://youtu.be/CPS7aNCAwAA?t=194