Feature: 1. High-quality polypropylene cone material and the use of high-density aerospace magnets for strong voice performance and great sounding audio. 2. High degree of sound reduction, HIFI-level experience, stage board to enjoy the stereo surround. 3. The use of high-temperature pure copper silver coil, large diameter, high-efficiency conductive sound, minimize distortion. 4. PP rubber horn and metal material for excellent durability and prolonged performance. 5. Double output, clear and full of treble, soft and nice to hear, bass calm and powerful, strong explosive. Specification: Features: High-quality polypropylene cone material and the use of high-density aerospace magnets for strong voice performance and great sounding audio. High degree of sound reduction, HIFI-level experience, stage board to enjoy the stereo surround. The use of high-temperature pure copper silver coil, large diameter, high-efficiency conductive sound, minimize distortion. PP rubber horn and metal material for excellent durability and prolonged performance. Double output, clear and full of treble, soft and nice to hear, bass calm and powerful, strong explosive. Notice: Please confirm the size and the power before install the speakers to you car. Specifications: Material: Rubber + Metal Color: Black Size: 4 Inch Maximum music power: 300W Impedance: 4 ohm Sensitivity: 93dB (+1.5 dB) Frequency response: 60 Hz to 20 kHz Installation Diameter: 105mm Installation depth: 47mm Package Weight : 337g/ 11.89 oz Package Size : 10.5*10.5*4.7 cm / 4.13*4.13*1.85in Packing List: 1 x speaker Package List: 1 x speaker