Placement:Dashboard Combination:CD Player,Radio Tuner,MP3 MP4 Players Certification:CE RoHs Warranty:1 Years Name:car audio subwoofer mp3 player fm transmitter Voltage:DC-12V Output power:4*50W Power IC:7388IC FM frequancy range:87.5~108.0MHz Load impedance:40HM Material:Plastic+Aluminium alloy Color:Black Size:178cm*50cm Panel:Fixed