2.1- Channel Digital Home theatre speaker system Model: YD-10 Highlights: Powerful subwoofer; Elegant design; Full function remote control Specification: Drive unit: 6.5+ 3*2+1 inchs Power: 40 W+25W*2 Impedance:6 Ω Frequency: 20Hz-20KHz Sensitivity: 88 dB THD: 0.2% N.W: 20KG G.W: 23KG Packing : Carton box FOB port: Guangzhou/Shenzhen Delivery lead: 30 days