MATERIAL QUALITY – Our anti barking device is 100% brand new with good quality, guaranteed by strict inspection and production, and manufactured to the highest industry standards. Made from durable ABS plastic material. TRAIN YOUR CANINE – The dog anti barking device can effectively train your dogs to be obedient and stop some unwanted behaviors, such as barking, digging, chewing and more, also they are harmless to both humans and pets. Train your pet easily with the ultrasonic feature to control your pet. MULTIFUNCTIONAL USE – Except as a pet training tool, our dog anti barking is also can prevent you from dog attacks, fit for training many kinds of dogs, such as pets, dogs in police and shepherding, suitable for outdoor work, travel and security night patrol. EASY TO USE – First open the battery cover and then put 1 piece 9V battery (not included), the sound is audible only to pets, finally turn on the switch and it can work well, also they can serve as a flashlight when necessary. KEY FEATURES – Stop your naughty pet from barking, developing a better habit. Practical flashlight provides extra convenient use, especially at night. Just need to press or switch the button, no any other tools required.