Sirius SUB-X1 Universal Plug 'n' Play Boombox (Discontinued by Manufacturer) Auxiliary input; measures 19.18 x 8.81 x 8 inches (W x H x D); 1-year warranty Docking cradle holds Sportster 3 and 4, Starmate 3 and 4, and Stratus receivers 2.1 full-range sound system with separate tweeters, midrange drivers, and subwoofer Universal plug 'n' play boombox for Sirius satellite radio receivers Indoor/outdoor antenna with attached 19.5-foot cable; 3.5 mm headphone jack Universal plug 'n' play boombox for Sirius satellite radio receivers 2.1 full-range sound system with separate tweeters, midrange drivers, and subwoofer Indoor/outdoor antenna with attached 19.5-foot cable; 3.5 mm headphone jack Docking cradle holds Sportster 3 and 4, Starmate 3 and 4, and Stratus receivers Auxiliary input; measures 19.18 x 8.81 x 8 inches (W x H x D); 1-year warranty