PetSafe Collarless Trainer is a handheld device that emits a high-pitched sound only your dog can hear, capturing their attention and allowing you to correct unwanted behavior like barking, digging or jumping with the push of a button. Choose from three training modes—tone, ultrasonic, and ultrasonic and flashing light—plus a flashlight-only mode for added convenience. Variable and fixed frequencies ensure your pup doesn’t get desensitized to the training tool. With a light, ergonomic design and a wrist strap for convenience, the Collarless Trainer is easy to carry on long walks or attach to a belt. Find peace through quiet for you and your dog by gently correcting their unwanted behavior with contact-free correction.