Use the power of light to charge the adidas RPT-02 SOL wireless sport headphones. Additionally, these wireless headphones are also self-charging. These sport headphones consist of 87% recycled plastics. In fact, the sweatproof and splashproof design make these headphones perfect for workouts and your active lifestyle. The fact that these headphones use the power of light to charge up makes them a unique entry in the world of sustainable headphones. Also, if you worry about the hygiene part of things, you can easily throw the inner headband and ear cushions in the wash after a hard workout. You can even control your headphones easily as well as manage its features from the adidas Headphones app (available in both iOS and Android).