The pinnacle of sustainability! The watches in the Automatics collection work on kinetic energy, in other words, the movement of your wrist. So you will never need a battery for your watch again. Inside the movement of the Noyer Motus, a rotor rotates, converting the energy from the movement of your wrist into energy that makes the watch run. In addition, the Noyer Motus has a skeleton movement, so you can watch the entire movement spinning, both in the front and back. The case of the Noyer Motus is 44mm in diameter and is made of both ebony and American walnut. The glass on the front and back is made of scratch-free mineral crystal, and the stainless steel details on the dial and in the bracelet are silver. The strap is easy to adjust to your wrist with the free tool provided. This men's wrist watch comes with a 1-year warranty.