... function 3.0+EDR BluetoothSpecification: Special Feature:Wireless, Portable, Mini,hand free USEPortable Audio Player, Mobile Phone, Outdo…MaterialABSChannels2SolutionOV ... or CSR Solution,OV solutions cost is cheap than CSRBT Version V2.0+EDR or V2.1+ ... board *111)Power supply:USB port or DC 5v mini wireless Bluetooth speaker with FCC,CE,ROHS certificate