Use the TOCC’s 3-in-1 FM Transmitter to play music from your smartphone and make speakerphone calls through your car stereo. The transmitter plugs into your car’s 12V power port and connects to your device via its 3.5mm audio cable. The innovative design of the transmitter includes built-in charging cable and additional USB port for double charging access; simultaneously charge two smartphones or tablets while streaming music. An easy to read LED backlit interface displays the current channel which makes finding available stations as easy as the press of a button. Using the transmitter, you can even make and receive calls hands-free on your phone. The unit also features surge protection to prevent over-charging and over-heating of your mobile devices. Liven up daily commutes, long road trips, extended errands and anywhere else the road takes you.