GA-0404 Type Plastic Speaker System type: 2 Way Molded Speaker Box Woofer: 4 inch woofer, 7 OZ 19.45 mm VC, 8 Ohm Tweeter: 1.5 inch,13.24 mm VC 8 Ohm Frequency Response: 65-20 KHz (-10 dB) Sensitivity: 90±3 dB/M/W Dimensions (W*D*H): 180*145*235 mm Net Weight: 1.9 kg Power: 20-40 W