For In-Car Stereo Listening! Music was made to flow through your speakers. So, why is it trapped in your Smartphone, iPod, or MP3? Free your playlists with our Stereo Bluetooth In-Car FM Transmitter. Just pair our Bluetooth transmitter with your Smartphone or other Bluetooth enabled device, match the transmitter"s FM frequency to your car stereo"s FM frequency, and listen! Also For Hands-Free In-Car Phone Conversations! Need to take a call? Just press a button and start talking. The built-in microphone lets you talk hands free. Hang up, and your music picks up where it left off. It"s that easy! Plus, a built-in USB jack lets you charge your Smartphone while listening. Answer Smartphone calls, redial, or mute. Bluetooth profiles (V2.1): A2DP, AVRCP, HFP, HSP. Includes: Bluetooth Receiver/FM Transmitter, Gooseneck plug, 3.5mm male/male cable, English/Spanish manual.