The PetSafe PRF-275-19 Stubborn Dog Extra Collar is designed for larger and stubborn dogs that are continuously challenging the barrier. It works with the PIG00-10782, PRF-3004W and PRF-304W containment systems. PetSafe PRF-275-19 Stubborn Dog Extra Collar Features: For stubborn, hard to train dogs with at least a 6" neck Four Levels of Adjustable Correction, plus warning tone Additional vibration feature in the warning zone to provide an added deterrent Low Battery Light Anti Linger so the dog cannot stay in the warning zone and run down the battery Progressive Correction Waterproof Comes with short and long contact points Uses 9 volt battery

Dimensions 2.5" long 1.5" wide 1.5" thick Weighs 6.5 oz