100% brand new and high quality. Ultrasonic Design Based on ultrasonic theory, the dog trainer can effectively train your dog to be obedient and eliminate some unnecessary behaviors such as barking, chewing, digging, etc. Wide range of applications: Ideal for training all kinds of dogs, such as pets, police dogs, shepherds, border dogs Collies, herding dogs, etc. Easy to use : First open the battery cover, then insert the 1 x 9V battery (not included), pets can only hear the sound, and finally turn on the switch to normal to work, and can also be used as a flashlight when needed. . MULTIFUNCTIONAL: In addition to pet training equipment, it can also warn you of dog attack, suitable for outdoor work, travel and night security patrol. The following conditions do not behave dogs well: The dog you own because it knows the owner will not harm it. Noisy environments, such as the city center or the roadside. < p>A dog dominated by its owner; a large, well-behaved dog. If the battery voltage
