The Wireless GPS Dog Fence PD100 combines containment and training in a single device, eliminating the need for physical fencing. This 2-in-1 collar uses GPS technology to establish customizable virtual boundaries around your property, alerting your dog with vibration or sound when approaching the perimeter. The integrated training function allows you to reinforce commands and correct unwanted behavior remotely. Waterproof and durable, it's engineered for active dogs. Ideal for properties of most size, the PD100 offers freedom and security without installation hassles.