Ultrasonic Handheld Dual Channel Anti-Barking Device 3 in 1 Dog Training Tool with LED Flashlight Ultrasonic Dog Repellent: It produces super powerful ultrasonic waves. When the dog hears the sound of the ultrasound, it becomes uncomfortable and keeps away from the person. People can’t hear. Dog behavior training: It can safely and effectively stimulate the dog’s nervous system, let it be guided by the owner, and have infrared lights, which can let the dog follow, effectively train the dog to stop barking, digging and other bad behaviors, and it is not safe to eat food, fights, etc. Handheld and Portable: Comes with a lanyard, it is convenient for you to carry it with you, such as jogging or walking, cycling, parks, etc. Easy to operate: first open the battery cover, then put in 1 9V battery (not included), turn on the switch, and it will work normally. Can also be used as a flashlight if necessary. Ultrasonic bark protectors are not effective for dogs with hearing problems and we do
