Compatiblity: RoadyXT, SKYFi 3, and Xpress radios Features two 3.25-inch low-frequency woofers and two half-inch high-frequency tweeters 10-watt RMS amplifier produces high-quality sound Internally stored XM antenna Foldable handle contributes to its sleek design Product DescriptionThe Audiovox XM Satellite Radio Sound System features two woofers, two tweeters, bass boost, and a 10 watts RMS amplifier [...]