Easy installation Simply plug the Bluetooth FM Transmitter in car cigarette lighter and connect your phone or other device to Bluetooth or use the AUX cord that come with it you get, choose a calm Station on your car radio and place your transmitter to the same channel and you are you can listen to music in real time.For safer driving. Car you can taking phone calls hands free. You can also display the caller ID on board 1.44 LCD monitor. What is more, Caller ID may from FM radio transmitter are sent Wagen.wireless FM transmitter for car comes with the function of the hands-free function, you can make calls directly from your cell phone to your AUX FM radio auto speaker to answer. With it's you can enjoy the fun, dNo road is too long with music Company. If you and your family with the car travel, you can enjoy the music in your phone or TF/SD card through Bluetooth radio transmitter. The device to delight you amazing when travelling and makes the a fahren relaxed and enjoyable.Good adaptability. The AUX transmitter fits on the the majority of cars. Detection of battery voltage of your car's car when switched on and monitor the the battery all the time. Dual USB Car Charger - Stream music from your Bluetooth enabled devices: iPhone, iPad, Android phones, Samsung Smart Phones, USB Car MP3 Player and Android tablets... supports TF card - Stream MP3/WMA/FLAC files directly from external Micro SD cards.After-sale service: car Bluetooth technology is becoming more and more mature, this product is of good quality and easy to us. if you have any problem with it, please contact us, we will provide the best solution for you.