Automatic: Watches with automatic mechanism do not require manual winding, as they wind with the movement of the hand by rotating a rotor that winds the spring.
Solar: Solar-powered watches convert solar energy into electrical energy, which is stored in a rechargeable battery and used to power the watch.
Eco - Drive: Watches with Eco-Drive mechanism convert any type of light into energy that powers the watch. With a full charge, it can operate for months even in the dark, without requiring regular battery replacement.
Kinetic: Kinetic watches use a combination of automatic and quartz mechanisms, converting motion into electrical energy and storing it in a capacitor.