Experience smart driving with this multi-function car kit with FM transmitter. Simply plug the SmarTune-4 into your car cigarette lighter socket, and you are ready to go. With built-in microphone, the FM transmitter provides the hands-free function to answer/reject calls. SmarTune-4 features QC3.0 quick charging port and another USB charging port which also functions as a media port for playing music. With multiple connectivity options, including USB flash drive, microSD Card, and Bluetooth, SmarTune-4 is your exceptional car companion.