Review on Enhance Your Car Audio Experience with Bluetooth FM Transmitter: Wireless Radio Adapter, Hands-Free Calling, Dual USB Ports, TF Card/AUX Support by Nick Mahoney

Easy to connect, very poor sound. Songs with a terrible base. Also, Bluetooth keeps dropping, so I have to reconnect. The phone function sucks. You can't hear people calling you. Once you're done talking, you'll need to reconnect Bluetooth to hear the music again. Remember to go back. ***Update*** Find a good FM station. The sound quality is much better now. I'm still not sure if it still disconnects or if people can't hear you during a call. It could also be a bad FM station. Will make a final update as soon as I know.