Model: F44663 Product Name: Car Subwoofer Material: Aluminium Rated: 250W Max Power: 800W Voltage: DC 12 V Speaker Size: 8inch bluetooth: Not Support SNR: > 90dB Total harmonic distortion. The external configuration of high strength stainless steel horn protection net cover. Alloy fuselage to reduce the noise caused by the vibration. 8 inch 800W high power design, with the volume controller. Low frequency ability of the bass horn, high quality low tone output. Fine workmanship and good performance. Easy to install, can be installed directly under the driver’s seat. We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. Please allow 0.5-1 inch difference due to manual measurement. The instruction is not included in the package. Professional installation is Highly Recommended. Package Included: 1x Subwoofer Speaker 1 x 4m Positive power cord (red) 1 x 0.4m Negative cable (black) 1 x 4m Audio cable (blue) 1 x 4m Control cable (dark blue) 1 x User manual. If item is defective after 3 months, you can still send it back to us.