Carpanion Multifunctional Bluetooth Car FM Transmitter Dual USB Port 3.4A Adapter Charger AUX Stereo Audio Receiver, Support USB-Disk, TF Card, Bluetooth Music Mp3 Player Built-in Carpanion FM transmitter Fit for iOS / Android / Windows,works with iphne,ipad and all smart phones New model Bluetooth MP3 Player FM Transmitter Hands-free Car Kit Charger, which support USB driver and Micro SD card and can automatically play and transmit the MP3 files of USB driver and Micro SD card after matched with your radio by the frequency. Simply paired your phone with the Bluetooth FM Transmitter and its hands-free system can set free your hands during answer the calls and let you safely drive. Fashionable appearance and excellent sound quality and beautiful music can comfort people and release stress Hi-Fi transmits your favorite tunes from the portable Bluetooth music players to your car FM stereo system.