The PetSafe PRF-275-19 Stubborn Dog Extra Collar is designed for larger and stubborn dogs that are continuously challenging the barrier. The PRF-275-19 extra collar receiver has 4 Levels of Progressive Correction levels; which will automatically adjust 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 system for a stubborn or large breed dog.