There are several types of self charging watches out there. Solar are some, kinetic watches. https://en.wikipedia.org/wiki/Automatic_quartz https://en.wikipedia

There are several types of self charging watches out there. Solar are some, kinetic watches. https://en.wikipedia.org/wiki/Automatic_quartz https://en.wikipedia.org/wiki/Automatic_quartz I think that means it will sit on a shelf unworn for 6 months