Make your car AUX audio system and home theater AV HiFi surrounding system become bluetooth-compatible compatible, get music from bluetooth-compatible enable device such as smart cell phone or bluetooth-compatible PC, laptop.Simply connect this bluetooth-compatible audio receiver to your line-in or auxiliary input on your speakers, pair it to your bluetooth-compatible enabled device, and enjoy the wireless music revolution.Whether you want bluetooth-compatible convenience in your car, through your home-theater system, in your kitchen, bathroom, or bedroom, etc.Simple operation, 3.5mm male to male audio cable to connect the speakers and the receiver.High-performance AMP chip, can push the headset, and high-power speaker, applicable to all types of speakers.Powerful bluetooth-compatible IC, more stronger compatibility.You can play music through your car stereo and answer phone call via the built-in mic.Operation Steps:For no USB port speakers: supply power to the device by connecting charger with DC 5V USB interface, then connect the speaker& 39;s AUX port with the audio cable.For speakers with USB port: connect the device with speaker& 39;s USB port directly, then connect the speaker& 39;s AUX port with the audio cable.Turn on the bluetooth-compatible function of computer, mobile or other device which has bluetooth-compatible function, searching for the device to connect.After matching success, you can use your phone to play music.Type: bluetooth-compatible Music ReceiverColor: BlackBluetooth: 2.0 + EDRPower Supply: via USB PortOutput Mode: 3.5mm Audio InterfaceTransmission Distance: 10mSize: 5.5cm x 2cm x 1cm/2.17" x 0.79" x 0.39" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible Music Receiver(This item is just the receiver device)1 x 3.5mm Stereo Audio Cable1 x User Manual