PetSafes Collarless Ultrasonic Trainer produces a sound that only your dog can hear. When your dog hears the sound, he understands that youre trying to get his attention and will stop whatever he is doing. The system also produces a pleasing tone to reward good behavior. Uses one 9-volt battery (not included). Imported. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Whistles.
