100% brand new and high quality. Ultrasonic Design: Based on ultrasonic theory, the dog trainer can effectively train your dog to be obedient and stop some unnecessary behavior such as barking, chewing, digging, etc. Wide range of applications: ideal for training all kinds of dogs, such as pets, police dogs, sheep dogs, border collies, sheep dogs, etc. Easy to use: open the battery cover first, then insert the 1 x 9V battery (not included), pets only can hear the sound, and finally turn on the switch to work normally, and also can be used as a flashlight if needed. . MULTIFUNCTIONAL: In addition to pet training tools, it can also warn you of dog attacks, suitable for outdoor work, travel and night security patrol. < p>The following conditions do not behave dogs well: The dog you own because he knows the owner will not harm him. Noisy environments , like the city center or the side of the road. A dog dominated by its owner; a large, well-behaved dog. When the battery voltage is too
