... Usb,sd card slot FM radio, mp3 player, amplifier DC 12V, AC 220V subwoofer car amplifier mp3 / fm radio subwoofer Item No.: GSG ... )Carpat / PVC / Artificial leather surface for optionalEQ effect: Flat / Jazz / Class / Pop / Rock Surface color choice: Red, Black, Green, Blue,Yellow ... with DC 12 V: motorcycle / motor-tricycle / beach vihicle / truck / car and so on Supply power with AC 220V : home audio ...