Earldom ET-M74, Bluetooth, USB, Micro SD, QC 3.0, Black FM Transmitter A feature Version V5.0 of the FM transmitter's Bluetooth Encourages Flash device and micro SD/TF card MP3/WMA/WAV files are supported. LCD display The last frequency memory feature FM channels with built-in fuses range from 87.5 to 108 MHz (206 channels total). USB charging output for Quick Charge 3.0 Black is the color.