Virtual smart fence to corral your dog wherever you go. Using GPS technology and navigation, the SpotOn dog collar allows pet owners to create a remote perimeter — from a backyard, local park or campground. Customers start by walking the perimeter of the area in which they wish to contain the dog, which is then saved as a virtual map. When the dog approaches the edge of the perimeter wearing the collar, a high-pitched, friendly tone is emitted. If the dog goes beyond the first zone, a second, more stern and commanding tone is emitted - you can also choose between a static electricity shock