GSI Bluetooth Stereo Headset Supports Wireless Music Streaming and Hands-Free calling maximum portability.with back-hang style Foldable design Folding and retractable design, easy to take with you. Enjoy stereo music wirelessly from Bluetooth A2DP devices.call transfer, Embedded microphone for hands-free conversation from Bluetooth-enabled cell phones. When receives an incoming call, the music will pause automatically.Easy controls for mute.voice dial and call answer/end/reject. Automatically connect to the last connected Bluetooth device.Micro USB connector charging via AC charger or computer USB port.