This PetSafe PRF-275-19 Stubborn Dog receiver collar is designed for large or hard to train stubborn dogs that are consistently challenging the barrier. This collar features four levels of progressive correctional levels; automatically adjusting to your dogs behavior.

Note: This collar works with all PetSafe In Ground Fence containment systems. This allows you to add this collar to any new or existing PetSafe containment fence system for stubborn, hard to train or large breed dog.