All in one 2.1 channel soundbar with 3d surround sound. built in battery rechargeable li 1200 mah??Playing time: 8 hours (normal volume)</br>Bluetooth 4.1+EDR??Bluetooth remote control 10M (33 ft - no obstacles such as door ?? wall)</br>Support tf card?? u disk?? fm radio??AUX</br>Display led exposure time?? wake up??function clock?? line?? fm radio?? the state of charge?? bluetooth and so on.</br>Support of hand when answer call (with microphone)??support of the phone and the phone number and reporting function</br></br>Product Description</br></br><b>The Features of Bluetooth speaker:</b><br> .Bluetooth 4.1+EDR??the utmost receving distance is 10 meters.<br> .[Bluetooth calls]Voice clear without echo.<br> .[MP3 play]Directly pla