This Bluetooth Music Receiver connects to the Line-In or Aux input on your home audio system. You can then stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system. Enjoy the convenience of having your music source in the palm of your hand and listening to it through your home stereo. it comes with a AudioB plus Bluetooth module. Note：TSA6012 can auto detect the Aux in/Line in Audio input. Bluetooth Audio source has higher priority. When Bluetooth audio paused or bluetooth disconnected. TSA6012 will output the Aux in/Line in audio. If you need a bluetooth receiver that Aux in/Line in audio source has higher priority. Please use our TSA6010 receiver board. Features: Size: 42*32*11mm Bluetooth 4.0 Stereo receive Effective transmission distance: 10-15m Mcro USB female port for powering the receiver from any USB power source(5VDC) Compatible with all Bluetooth devices that support media audio, including iPhone On Jul-15-18 at 20:00:18 PDT, seller added the following information: