The GVColAnt is super heavy-duty and tuned to work with your Garmin or Dogtra tracking collar. Its highly conductive material gives long-range visibility in dark conditions. Use as a replacement antenna for your TT15, TT15Mini, TT15X, T5, T5Mini, TT10, DC-50, DC-40, Pathfinder, PathCol, PathTRX, PathTRX-RX, PathMini, PathMini-RX, Path2, Path2Mini, PathSE, or GVPath. At over 23 inches, this collar enhances the range of your tracking collar for better overall performance. Built to last with a heavy-duty outer coating and inner stainless steel core. Stainless steel won’t rust or corrode like many galvanized steel models on the market. Easy to install…simply remove the old antenna and secure the new one with a single screw. Please “charge” the antenna from a bright light source for at least 3 hours before use at night. You may also recharge during your hunt with a strong light source. For optimal results, “charge” the antenna from both sides.