Xtenda Range Backpacker Antenna. Compatible with the Garmin/Dogtra Pathfinder GPS Tracking Systems. The Backpacker comes with 10’ of coax and has the nice SMA connector for easy on and off your Garmin or Bluetooth device. These are built for Hound Hunters who have to walk, or horseback, or even hunt out of boats, and have to walk a long way to retrieve their hounds. Super lightweight with ground plane technology to boost your tracking ability. The harness has adjustable straps that can even be strapped on to your Backpack if preferred. Protect what you Love!!!