FM Transmitter Bluetooth Radio for Car, In Car Bluetooth Adapter Radio Transmitter Receiver MP3 Player Hands-Free Calling for Car Audio Stereo System USB Car Charger UNIVERSAL COMPATIBILITY-- First of all,it work with wireless enabled devices, such as smartphones Samsung iPhone, iPad, iPod, Samsung Galaxy S5, Tablet and moreYou can use it to play spotify and map navigation. Any other Popular music software, or E-book, drama, fiction, cross talk. Any of the Sounding APP software. WHAT'S MORE- - Hands free function; support TF / MicroSD Card up to 32G memory (It need an adaptor to convert the SD to Micro, not including); support A2DP; support only MP3/WMA format songs in TF Card; support AUX output and input. There are 3.5mm to 3.5mm adaptor for your mp3 mp4 player or other compatible audio device that have a 3.5mm audio jack. Support the flash drive. BIG LCD DISPLAY- -phone number for incoming calls & name of songs playing through TF Cards could be displayed as well; (songs via wireless will not display ), Simply paired with your phone when using the FM Transmitter and its hands-free system can set your hands free when answering a call and let you drive safely. Perfectly suitable for car owners. AUTOMATIC MEMORY FUNCTION--station or the songs,when use the FM transmitte mp3 second time. 7 built-in EQ: Normal, ROCK, POP, CLASSIC, Country, JAZZ, DBB. ENJOY QUALITY MUSIC AND QUICK CHARGER--Do not waste your time, when you are in car, you can simultaneously charge your phone and listen to music using the wireless feature, With two USB ports, you can charge your devices at the same time(Note: The one on adapter can only charge your device, the one on MP3 player can charge your device and supports USB disk play)