... : Driverless.Plug&Play. Stereo Bluetooth audio adapter Bluetooth CSR 2.1 Supported Profiles: A2DP,AVRCP/ Support: Mobile Phone, Mp4, ... )Powered by inbuilt lithium battery or USB port.7)Support: Mobile Phone, Mp4,Mp3,HIFI IPOD, TV, ... versionBluetooth V2.1Bluetooth profilesA2DP and AVRCPBluetooth frequency range2.402GHz-2.480GHzOperating distance10 meters, Class IICharging input voltage/currentDC ...