Petsafe Collarless Ultrasonic Remote Trainer

DETERS BAD BEHAVIORS: Emits an ultrasonic sound (undetectable to most humans) to deter your dog from bad behaviors
REWARDS GOOD BEHAVIOR: Emits a positive tone to train and reward your dog for good behaviors
NO RECEIVER COLLAR NEEDED: Functions as a stand-alone product so your dog does not have to wear a receiver collar
LONG RANGE: Features a range up to 30 ft and is perfect for dogs of any size