Features： 1、EXCELLENT SOUND QUALITY: Car subwoofer feature high performance bass effects for an immersive music experience, your family and friends will love it 2、ULTRA THIN AND COMPACT: The car seat subwoofer use an ultra thin design to save space inside the vehicle and facilitate installation, very convenient 3、WIRELESS BLUETOOTH: Car subwoofer amp built in bluetooth function, support wireless music playback, easy for you to control, provide great convenience 4、SMART AND STYLISH: The ultra thin car subwoofer with smart design and stylish appearance to add flair to your vehicle, you can use with confidence 5、LONG LASTING MATERIAL: Subwoofer is made of excellent PU, magnet, steel, composite board materials, long lasting and reliable, without losing sound quality for a long time Specification： Item Type: Car Subwoofer Material: PU, magnet, steel, composite board Effective Power: 250W Maximum Power: 800W Resistance: 4 ohms THD: Less than 0.4% Bass Enhancement: 0 to +12db Fuze Current: 25A SNR: Greater than 90dB Tweeter Magnet: Approx. 70mm / 2.76in Woofer Magnet: Approx. 100mm / 3.94in Package List： 1 x Subwoofer 1 x Power Cable 1 x Sound Cable 1 x Control Cable 1 x Grounding Cable 1 x User Manual