... interfaces,support different kinds of music format4.key button with remote control is convenient for placing5.connect with TV/DVD/Video ... Frequancy response: subwoofer:35Hz-200Hz satellite:200Hz-20KHz Dimension: subwoofer:D300×W305×H175 mm satellite: D127×W95×H223 mm Color Box ... system speaker ,With usb ,sd ,vfd display, fm , karaoke , mini remote function