These headphones, made from a mixture of plastic and wheat straw, reduce the amount of plastic needed. They feature an integrated multifunction button to control all functions: on/off, answer/hang-up, play, pause, next/previous song, volume +/-. Bluetooth® 5.0 with a range of up to 10 meters. The charging capsule can recharge the earphones from 0 to 100 % at least 3 times. Autonomy is up to 2 hours at maximum volume and a full charge in 1 hour.