These Mu6 Ring Open Ear Air Conduction Headphones are wireless Bluetooth headphones that work with your iOS and Android devices. This headphones feature an open-ear design for a greater sound range, so you can enjoy your music to the fullest. WithMp3,WMA and AAC support, these headphones provide high-quality sound. The built-in noise-cancellation technology blocks outside noise and Milan magnetically reconnects your earpieces when it’s time to disconnect. The headphones are comfortable and lightweight, so you can easily take them anywhere.