2 In 1 Dog GPS Fence Tracker Wireless GPS Dog Fence GPS Dog Collar with 32-2887FT Radius IPX6 Waterproof for Small Medium Large DogsAlways afraid of your dogs security when taking he she out? Our GPS wireless dog fence combines fence function and tracker function. Once set up, if your dog approaches or crosses the boundary, the GPS receiver will beep for 20S, vibrate for 20S, give static shock for 20S and work by cycle until your dog backs into the established boundary. The GPS tracker also helps you locate your dog and allows you to follow the route on the e map to find him or