They've found a "clever" way to put a pocket watch into a relatively cheap machined bronze case to go on your wrist (hello huge watch) and sell it for over 5x the market value of said movements.
Most posts on here are ads, this one was 90% informative and I enjoyed the read and pictures that went with it, some things that the wiki article is missing.
The rest of the site might be nonsense to you and me, but I think this page did very well in displaying how much thought was put into ensuring reliability in the design of pocket watch mechanisms in the 1900s.
Yuck.