... R.M.S:20W 2.1 usb sd speaker with remote control,multimedia speakerwith usb/sd slotANJI TENGFEI ELECTRONIC CO. ... play .mp3,.wma music from USB,SD card with remote control.4.3.5mm stereo audio-in for computer, ... dvd,mp3,mp4,cd,etc5.Master control of Volume, Treble and BassSpecificationOutput power:Subwoofer:10W ... W210*H370MM 2.1 usb sd speaker with remote control,multimedia speaker/SR-500