Yes, you read the title right. This is a tuning fork watch. What does that even mean?
Before quartz movements, most watches ran on a windup movement. These watches often had a counterweight in them that would wind the watch as you move around, and you could wind it manually by turning the crown. The problem with this kind of movement, however, is that they weren't very accurate, often gaining plus or minus 5-10 seconds every day.
Bulova decided to set out and find a fix for this problem, and after some careful research and engineering, Bulova spawned their Accutron line, which at the time consisted of watches that kept track of time using, you guessed it, a tuning fork. The tuning fork resonates when power is applied to the watch, and this resonation drives a series of gears that will move the hands. The second hand does sweep smoothly, similar to a Rolex watch, but it also kept better time than a Rolex did.
Obviously, today's quartz watches are the most accurate watch movements out there besides a satellite watch or a smart phone clock, but for the time, this was definitely something of a technological breakthrough.
That's about al I know. I only barely researched the whole "tuning fork watch" thing. The concept is pretty fascinating, however, and I'd encourage you all to give it some research if you are interested yourselves.
Intro music is "Super Friendly" by Kevin Macleod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
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LINKS
Bulova Accutron Buying and Collecting Guide by eBay:
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