How Automatic Watches Work
To wit: Where Did Winding Go?
There's a chance, depending on how old you are, that you recall your dad winding his watch before bed every night. Otherwise, he would wake up to find that his watch had stopped. Because of the development of the automatic watch, those times are now long past. Why is it so simple? The watch's mechanism hasn't changed, but the manner of its power has forced a shift in watch maintenance.