MODEL:DH-5213 UNIT PRICE: USD18.00 Output Power: 30W(15W*+3W*5) Frequency Response: 30Hz - 20KHz Channel Crosstalk: >50dB S/N Ratio: >70dB Speaker System: 4"woofer on main unit 5x3" drivers on satellite units Product Size Subwoofer: L200*W280 *H300mm Satellite Speaker: L150*W100*H112mm Packing Size: L695*W460*H315mm Packing: 2set/carton Q`TY 20′: 560set 40′: 1608set 40′HQ: 1360set