Total output power: 2W (2.5-inch) x 2 Frequency response: 140Hz to 20kHz Input sensitivity: 500mV S/N: greater than 75dB Impedance: 4 Ohms Subwoofer dimensions: 90 x 83 x 116mm Satellite dimensions: 90 x 83 x 116mm Speaker size: 2.25 inches Gift box size: 220 x 88 x 121mm Carton size: 568 x 468 x 394mm/36 sets Gross/net weight (carton): 27/26kg Fits for Notebook Excellent sound