1. Make your Car AUX audio sytem and Home Theater AV HiFi Surrounding system become bluetooth compatible, get music from Bluetooth enable device such as For car bluetooth music receiver and call receiver fm transmitter connector Smart cellphone or Bluetooth PC, Laptop. 2. Simply connect this bluetooth audio receiver to your line-in or auxiliary input on your speakers, pair it to your Bluetooth enabled device, and enjoy the wireless music revolution. 3. Whether you want Bluetooth convenience in your car, through your home-theater system, in your kitchen, bathroom, or bedroom,etc. 4. Simple operation,3.5mm Male to Male Audio Connector or 3.5mm Male to Male Audio Cable to connect the speakers and the receiver. 5. High-performance AMP chip,can push the headset,and high-power speaker,applicable to all types of speakers 6. Powerful bluetooth IC,More stronger compatibility 7. Powered by built-in rechargeable li-ion battery via mini USB port , long working time and low consumption. (Mini USB cable included) 8. You can play music through your car stereo and answer phone call via the built-in Mic.