An automatic watch, also known as a self-winding watch, is a mechanical watch that uses the natural motion of the wearer's wrist to power itself.
An automatic watch uses a weighted rotor that spins with wrist movement, winding the mainspring through a series of gears. This self-winding mechanism converts kinetic energy from daily wear into stored power, eliminating the need for manual winding or battery replacement.
No, but wearing an automatic watch regularly keeps it wound and running. If left unworn, most automatics stop after 38-48 hours. You can use a watch winder for storage, or simply reset and wind it when you want to wear it again.
No, automatic watches have a slipping clutch mechanism that disengages when the mainspring is fully wound, preventing overwinding damage. However, excessive manual winding can cause unnecessary wear on the winding mechanism, so it's best to let the rotor do most of the work.