Features: 68mm ultra-thin under-seat subwoofer, which fits nicely under the passenger side and saves space in the car. High-powered active subwoofer provides nice low-frequency performance, making the bass output pure and making the audio more vivid. Support for audio playback via BT connection to your phones, built-in amplifier, reliable performance, effectively enhance the sound of the speaker. PU leather wrapped wooden body, effectively reduce the noise caused by vibrations. High-strength stainless steel speaker protective mesh cover, not easy to rust, strong resistance to pressure. Delivery includes the installation wires to help you quickly complete the installation, compatible with 12.0V voltage car, truck, SUV, RV, etc. Specifications: Color: Black Material: PU + Wood Subwoofer Size: 8 Inch / 10 Inch(optional) Voltage: 12 V Rated Power: 8 Inch-600W / 10 Inch-800W Total Harmonic Distortion: less than 0.4% Frequency Response Ranges: 20-150Hz Signal-to-Noise Ratio: more than 90dB Bass Boost: 0-12dB Item Size: 8 Inch: 345 * 260 * 68mm/ 13.6 * 10.2 * 2.7in ??????????????? 10 Inch: 360 * 280 * 68mm/ 14.2 * 11.0 * 2.7in Package Size: 400 * 320 * 130mm/ 15.7 * 12.6 * 5.1in Package Weight: 8 Inch: 4.2kg/ 9.3lb ????????????????????????? 10 Inch: 5.1kg/ 11.2lb Packing List: 1 * Car Subwoofer Kit