This powerful remote antenna magnetically mounts to your vehicle and connects to the Astro 220 or 320 so you can track your dogs with your handheld while stationary or driving. Adds up to two miles range, depending on conditions and terrain.
this antenna is by far the best on the market. I have owned many other imitators that promise longer range, truth is they suck. if you trust garmin with a tracker than why not the antenna. it helps pick up your dogs much further than a regular antenna. the best long range antenna out there!! so dont waist your time with any other products.