FAVI Clip Bluetooth Wireless Headphone Adapter (Black) Bluetooth/NFC Hands free calling/built-in microphone Choose your color/match your headphones. Wear it anywhere. Also comes with free earbuds. Designed & Calibrated for Beats by Dre, Skull Candy, Audio Technica, Sony, Bose, Shure, AKG Long Lasting/Built-in Rechargeable battery