petsafe underground dog fence collar - for stubborn dogs - waterproof receiver - 5 levels of correction plus vibration - prf-275-19 bonus one 9 volt petsafe the petsafe stubborn dog collar is for the occasional "hard-headed" dog. this is the most powerful dog fence collar available with five levels of correction plus vibration as an added deterrent. this is a true breakthrough in pet containment. <br>ideal for extremely hard to train dogs, or dogs that are consistently breaking through the boundary and need a stronger receiver. <br><br>five levels of programmable correction plus a vibration feature in the warning tone as an additional deterrent.<br>***level one is warning only with vibration - ideal for initial training or very timid pets.<br>***levels two thru four are for easy or average to train pets.<br>***level five is for very hard to train or stubborn pets.<p> progressive correction - if your pet attempts to leave the yard, the receiver will automatically increase the correction level until he returns.<br>anti linger so the dog cannot stay in the warning zone and run down the battery.<br>levels are easily changed with a push of a button on the receiver.<p> safety features include: <br>***protection against false activation - only our transmitter can activate the receiver. no false activation from televisions, cordless phones, garage door opener etc. <br>***receiver fail-safe - if your pet gets trapped in the correction zone, the receiver will shut down after 20 seconds to protect your pet. <br>***receiver with adjustable collar. <p> the petsafe stubborn dog collar is for the occasional hard-to-train dog and is compatible with all petsafe, radio fence and pet guardian brand underground dog fences except ultrasmart rechargeable in-ground fence (pig00-13619) and yardmax rechargeable in-ground fence (pig00-11115). <br>also compatible with the indoor pet barrier transmitter (pirf-100) to protect your pet indoors. <br>it weighs just 3 ounces and measures 2.25 x 1.5 x 1.25 inches. it is three times more.powerful than our regular dog fence collars and is designed with stubborn or hard to train dogs.