When it doesn’t need a battery, then it’s commonly referred to as a mechanical watch. A further distinction is an automatic watch, when it also doesn’t require manual winding to function and uses the movement of your wrist to stay powered.
When it doesn’t need a battery, then it’s commonly referred to as a mechanical watch. A further distinction is an automatic watch, when it also doesn’t require manual winding to function and uses the movement of your wrist to stay powered.