This In-Ground Fencing system has been redesigned for the stronger willed more stubborn to train dogs. The lightweight receiver comes with an adjustable nylon collar. The receiver has 5 levels of static stimulation, as well as an audio and audio and vibration only setting. Helps prevent dogs from straying from your property into potentially dangerous areas. The receiver is waterproof and suitable for outdoor use only. This boundary consists of 150m of wire and 50 flags. Additional wire and flags can but purchased to extend the boundary to give your dog more freedom while still keeping them safe