2-in-1 audio headphones to listen to your music wirelessly on bluetooth 5.0 (up to 10 m range) or plugged in with the removable jack cable. Kids safe: sound limited to 85 db to protect childrens ears. With built-in microphone, play/pause and volume buttons to control their music and answer phone calls. Rechargeable battery: several hours of battery life in wireless mode; unlimited playback time in wired mode. Compatible with all smartphones, tablets, audio and video players equipped with Bluetooth or 3.5 mm audio output for headphones.