Sirius SUPV1 Universal Dock and Play Vehicle Kit Universal car kit for Sirius Sportster 4, Starmate 4, and Stratus receivers Handy docking cradle holds satellite radio receiver in convenient location Offers 2 mounting options: windshield suction cup mount and vent mount Antenna with magnetic base attaches securely to car's roof or trunk lid Includes 12-volt cigarette lighter power adapter; 1-year warranty