This design combines a bracelet (or watch if you’d like) and a lighting device. It is powered the same way that a crank light is. As you move your arm, a magnet travels through a circular copper tube. The energy is then harvested to power the light. It gets rid of fuel consumption and battery consumption, making it very efficient and environment friendly. It allows for much customization and is very compact. Our astronauts will always have a light on them if they are wearing this bracelet.