This receiver has 5 levels of correction to match the sensitivity of your pet. It comes with a nylon collar, batteries, short probes for short-hair dogs and long probes for long-hair dogs. It is compatible with PetSafe® In-Ground Fences and can be used to add a new dog to your fence system or to replace your current collar. For use with PetSafe® In-Ground Fence Systems Progressive correction and anti-linger programming 4 adjustable levels of correction plus beep-only mode with vibration Waterproof collar 3 Year Warranty