CREATE A CUSTOM-SHAPED FENCE: Create a safe 1/3-acre play area for your best friend with the included 500 feet of wire; Purchase additional wire to expand up to a 25-acre yard
FOR PERSISTENT PUPS: Receiver collar has a tone plus vibration mode and 4 levels of safe, static correction that you can adjust based on how your determined dog responds during training
GREAT FOR HEARING-IMPAIRED PETS: If you best friend has a hard time hearing, the tone plus vibration mode will help him learn his new boundary area and keep him safe in the yard