EFFECTIVE ANTI BARKING DEVICE. With the latest ultrasonic technology, dog training device is suitable for dogs of all breeds and sizes. The most harmless and humane way to keep your dog and your neighbors dog from barking! It can be used as a dog repellent device and a dog training aid tool to stop dogs' bad behaviors, such as endless barking, digging, and fighting. SAFE AND FRIENDLY FOR DOGS AND HUMAN. With newest ultrasonic technology, this stopping barking device is harmless to the dog's hearing and will not cause physical harm. Facts have proved that the sound frequency between 25-30Khz can not be heat y human. It can easily grab dogs attention and improve their bad behaviors. Consistent training is required to achieve effective and long-lasting results. SUPER EASY ONE-CLICK USE. Every time your dog makes mischiefbarking, leash pulling, jumping, etc., simply press the button and point the ultrasonic dog training clicker directly at him. Different dog breeds may react differently to the ultrasonic sound.For optimal effect, Once dogs having stopped barkings or unwanted behaviors ,Please congratulate and reward them, to make them understand what we expect from them. PORTABEL SIZE FOR INDOOR AND OUTDOOE USE. This dog barking control device is lightweight and small in size, and can even be easily placed in your jeans pocket. You can carry it at any time to intensively train your dog. It is very suitable and convenient for outdoor and indoor use. USB RECHARGEABLE DOG BARK DETERRENT. Comes with the USB cable, the bark stopper can be fully recharged in 5 hours, and our dog bark device can continuously work for 15 days.