2.1 channel speaker 1. Output power: 5w+2wx2(RMS) 2. Frequency response: 3. Subwoofer: 50-200hz 4. Satellite: 200-16khz 5. Speaker unit: 3"+2.25"x2 6. Control: Volume, power (phone jack) 7. Input: 3.5mm stereo 8. Ac power: 100v/240v - 50/60hz 9. Product size: Subwoofer: (w)110*(d)100*(h)162mm Satellite: (w)68*(d)45*(h)160mm Box size: (w)280*(d)130*(h)175mm.