Bluetooth FM Transmitter, RyuGo Car Bluetooth Receiver, Wireless FM Radio Stereo Adapter, Car Handsfree Calling MP3 Player with Two Way Plug USB Multi-function: This 180 degree adjustable Bluetooth FM transmitter enables you to do handsfree calls, listen to music, and it can support micro SD card and aux input, charge your device and monitor the voltage of car battery. High quality stereo sound: with call echo cancellation and noise reduction (CVC) technology, the FM transmitter provides you the best call and music quality for you to listen to your favorite songs and podcast. Hands-free Calling: With this wireless device, you can conveniently answer/ hang off/reject/redial calls through hands-free function. Two-way Plug USB Charging: With type C ports, you can plug your cable either way, more convenient to charge your iPhone 6 6+iPad Air, iPad Mini 2, Samsung Galaxy S4/3, Samsung Galaxy Note 3/2, Nexus 5/4, HTC One, Blackberry and other smartphones. Easy to use: Pairing your phone and FM transmitter by bluetooth, insert device in the socket, switch to FM radio mode, make sure FM transmitter frequency the same as car's FM, then you can enjoy your music what you want!