Output Power: Subwoofer:8W Satellite:3Wx2 Speaker Unit: Subwoofer:4" Satellite: 2"x2 Impedance: 4Ω Frequency Response: Subwoofer:80Hz-250Hz Satellite:180Hz-18KHz Power Source: AC240V,50Hz Signal-to-Noise Ratio: ≥75dB Dissociation: ≥40dB Control: Volume, Bass, Power on/off, Headphone output Dimension: Subwoofer: 190x190x215mm(WxDxH) Satellite: 87x85x175mm(WxDxH) Packing Size: 260x230x325mm(WxDxH) Gross Weight: 2.85kg Warnings and Precautions Congratulations on your purchase of this quality product.