mini, hifi color, usb,FM,sd card remote Features:1. Can play U disk SD/MMC card for music and FM stereo radio, ... support MP3, WMA music format. USB+SD+MMC+FM 2 ... >80dB Bass/Tremble control: +/-10dB The signal level: 220MV 47K Reader, u-disk format: MP3, WMA/FM FM Frequency Range: 87 ... :Red/Blue/Black 4 channal with mp3 ,FM,SD card mini car hifi amplifier