2-in-1 audio headphones to listen to your music wirelessly in Bluetooth 5.0 (up to 10m range) or plugged in with the removable jack cable. Kids safe: sound limited to 85 dB to protect the ears of children. With built-in headset microphone, play/pause and volume buttons to control your music and pick up calls. Compatible with all smartphones, tablets, audio and video players equipped with Bluetooth or with a 3.5mm audio jack output for headsets. Rechargeable battery: several hours of battery life in wireless mode. Unlimited playing time in cable mode. A lovely design from Harry Potter! Robust, lightweight, and foldable, it fits in a bag and can be taken anywhere: at school, when traveling … Adjustable, it adapts to all head sizes: adults, teens, children, boys, girls…it is super comfy for everyone.