Speaker Type: Bookshelf Speakers Number of Channels: 2.1 Number of Speakers: 3 Included: 2 Speaker Cable(s), 1 Remote Control(s), 1 Power Adapter(s) Features: Volume Control Impedance: 6 Ohms Inputs/Outputs: 1 Usb Port(s), 1 Fm Antenna(s), 1 3.5mm Audio Input(s) Manufacturer Warranty: 1 Year Parts Limited Peak Power Handling: 80 Watts Playback Formats: Mp3, Wma Tuner: Fm/Am Use: Indoor Measurements: 15.67 Width/Inches, 10.75 Height/Inches, 20 Length/Inches Minimum Frequency Response: 40 Hertz Maximum Frequency Response: 20 Kilohertz Weight (lb.): 18 Lb Country of Origin: Imported