Fully portable and easy to setup, with no wires to bury. Containment of 400 feet of wireless boundary, up to 11 acres. New technology allows the collar to conserve battery life while your dog is stationary. Secure battery cover requires a coin to open, to secure the most agile of dogs. Wide trigger zone to ensure your pets safety. Collar size is adjustable from 14-16 inches. 12 month limited liability warranty.