This is interesting to me, because I've recently gotten into mechanical watches as a hobby. If you don't know how a mechanical watch works, I recommend taking a look at some of these links:

https://www.youtube.com/watch?v=uGcoIue1Bs8

https://www.youtube.com/watch?v=Fh_8BFDcEkg&feature=youtu.be

https://torgoen.com/blogs/blog/mechanical-vs-quartz-watch-mo...