SallyBest&reg; Mini Hi-Fi 2-CH Car Bluetooth Amplifier USB SD DVD FM Audio Stereo Radio MP3 Speaker Digital Display Power Player for Car /iPod / Boat / Motorcycle -Red Sound mode digital display. 4-Electronic keypad control helps you operate the amplifier easily. With Bluetooth function, let you listen to music conveniently. It can play U disk SD / MMC card for music and FM Car Motorcycle Stereo radio, support MP3 music format. Seleted high-power four-channel professional power amplifier integrated circuits, minimal distortion strong power. DSP sound field pattern of the four. Filtering and anti-large-capacity power circuit.