Magnetic mounting with rubber feet allows for immediate installation without drilling into your vehicle’s surface. The antenna can be easily removed if you sell your vehicle or return it at lease end. The extra long 20 foot micro-coax cable can be routed around window moldings and through access holes for a professional, low-profile installation. Rubber feet to avoid scratching any car finish. Excellent compatibility – works with most xm satellite receivers. Delphi roady xt (home/car cradle). Audiovox xpress ez (home/car cradle). Audiovox xpress r (home/car cradle). Delphi xpress rc (home/car cradle). Audiovox xpress rci (home/car cradle). Sirius xm mirge (home/car cradle). Dimensions: 1.25″ w x 1.38″ d x 0.5 h. Frequency: 2332.5 to 2345.0 mhz. Satellite gain: 2 dbic average. Terrestrial gain: 0 dbic average. Supply voltage: 4.7v typical (from xm receiver). Operating temperature: -40 f to 185 f. Note: this is the 20′ xm micro antenna only.