The NGVA3 External Sirius and SiriusXM Vehicle Antenna mounts on most metal vehicle surfaces and has rubber feet to prevent scratching. It has a low profile, small size and approximately 23 ft. of cable. This allows the antenna to be placed almost anywhere on the vehicle to ensure optimal signal reception. It is compatible with all radios and docks that work on the Sirius and XM networks with push-on style, single-input antenna connector..