SallyBest&reg; DC 12V USB SD MMC DVD MP3 Sound Mode Digital Player FM Radio HIFI Car Motorcycle Power Stereo Amplifier with Remote Sound mode digital display, two main channel output. 4-Electronic keypad control helps you operate the amplifier easily. It can play U disk SD / MMC card for music and FM Car Motorcycle Stereo radio, support MP3 music format. Selected high-power four-channel professional power amplifier integrated circuits, minimal distortion strong power. Pre-professional level input operational amplifier IC for circuit design, sound, transparent, bright. Filtering and anti-large-capacity power circuit. DSP sound field pattern of the four. It supports FM radio play(FM: 87.5 ~ 108MHz). Remote control make your operation more convenient in a long distance.