Car Bluetooth Stereo Audio Receiver 3.5mm AUX Wireless Music Transmitter Adapter with USB Charger / Hands Free Call for Smartphones Bluetooth-enabled Devices - JVR AO24 Bluetooth Audio Receiver: JVR AO24 works by taking your Bluetooth signal and feeding it into your vehicles stereo through the auxiliary port. Advanced than FM transmitter, no need to choose the frequency. It delivers nice clean sound, unique station avoids interference / noise Wireless Stereo Music: Once paired, you can start your favorite music app and star playing. Tell friends to pair with that when they want to stream their own music or play YouTube videos on the phone, it will transfer the sound of the video and music to your car stereo. You can even set it to where you can hear the GPS on your phone in the car stereo if you like Hands-free & USB Charger: A microphone on the top of the receiver for two-way calling, thereby enabling hands-free communication. The USB port is a 2.1A port so it supports fast charging of devices that can support it. It is possible to charge your phone while also connected via Bluetooth Simple to Use: Plug it into your car's 12 volt outlet (cigarette lighter port), connect the 3.5mm auxiliary cable into the AUX jack for your vehicle's audio system. Hold the play button for a few seconds, the left and right buttons on it will toggle a blue flashing light so it enters pairing mode. Then connect your cell phone to it via Bluetooth. All three lights on the buttons will light up when connection is successful Compact Portable Design: 3 foot long cable that's coiled so it doesn't actually take up a lot of space. For people who do not have a vehicle with an integrated Bluetooth system, AO24 offers a simple but effective way to add Bluetooth to a car that has an existing AUX jack