ClearSounds Bluetooth TV and audio listening system Remarkably comfortable and adjustable headset Embedded microphone in headset allows for use with Bluetooth enabled mobile phones Enjoy stereo high-def music wirelessly pairs with A2DP Bluetooth devices Supports remote control of play/pause previous/next track volume up/down Pause music and playback automatically when receiving an incoming call Call transfer between headset and Bluetooth mobile phone 33 Foot operating distance Rechargeable 230mAh Li-polymer battery TV/Music listening time: up to 10 hours Talk time: up to 11 hours Standby time: up to 250 hours Charging time: about 2.5 hours Charge input voltage: DC 5VCLSCSCSTVBT