FM Transmitter Earldom M11 Bluetooth version: V2.1 + EDR Supports Micro SD/TF card and USB Flash device Supports MP3/WMA/WAV files 16-bit large LCD screen to display track information Last frequency memory feature FM channel range from 87.5 – 108 MHz (Total 206 channels) Built-in equalizer for optional digital sound output Infrared remote control for optimum function Support USB charger Output 3.4A Color: Gray