Avantree CHARGE FREE Bluetooth Receiver for Home Stereo | AUX or RCA Audio Adapter | Support 2 Devices | AptX Technology for CD-Quality Music Streaming &ndash; Roxa Hear your favorite tunes reach their potential with the Avantree Roxa music receiver. With Bluetooth 4.0 technology and incorporating the latest aptX decoder, each song will boast an exceptional audio quality. Want to stream from your phone and your tablet? No problem. This Bluetooth music adapter is able to connect to 2 devices simultaneously. There's no complicated manuals to read through and no installation required. Simply plug in and play! The extra 1A USB charging port allows you to top up your external device's battery and listen to your tunes at the same time. By being able to draw power from any AC socket, this battery-free Bluetooth audio receiver can run continuously, leaving you to enjoy your music without worrying about your device running out of juice.