Protect your dog with the halo collar 3 the most accurate gps dog fence ever created. Instantly create wireless dog fences that can go anywhere with a few taps of your finger in the halo collar app no fence installation required. 3 Wireless dog fence system uses proprietary precision gps ai software to leverage direct gps signals and ignore false data. Unlike any other tracking collar for dogs halo uses an active gps antenna that engages satellites to provide better reception in areas with poor coverage.
