As a watch enthusiast, you know the importance of understanding the intricate details that make a mechanical watch work. From the mainspringMainspring The mainspringMainspring The mainspring is a spiral-shaped metal spring that stores energy in a mechanical watch movement. It is located inside the barrel. The mainspring is wound, either manually or automatically. The mainspring unwinds over time, and the watch will stop running when the mainspring is fully unwound. [Learn More] is a spiral-shaped metal spring that stores energy in a mechanical