Pyle FM Radio Transmitter Adapter - Plays MP3 Music with USB Port, 3.5 mm Aux In Media File Support, Car Charger for Smartphone Android and iPhone, Digital LCD Power Display - PLMP2A TRANSMITS FM FREQUENCY: A FM radio transmitter adapter that draws power through the car power socket or cigarette lighter port. It transmits FM frequency to the car stereo to play MP3 music AUX IN FUNCTION: It plays music from devices that are 3.5 mm Aux in compatible like smartphone, iPods, and tablets. It can also support flash drives with MP3 files to play music on your car without hassle CAR CHARGER: Aside from playing music, this FM transmitter is built with a USB port to serve as a ready to use car charger. It can be used to power up several devices like Android and iPhone DIGITAL LCD DISPLAY: Made with digital LCD display to show radio frequency and simple button controls. Offers easy manual control to play, pause, forward music and rewind UNIVERSAL MEDIA SUPPORT: Supports several media like MP3 and WMA format files. The input voltage is 12-24V, the output power is 5V DC / 2.1A and the frequency range is 87.5-108.0 MHZ