Bubbacare newest ultrasonic Anti-Barking Device Features 1. Use ultrasonic sound to train the dog or stop the dog’s barking. 2. Detects the sound of a dog barking up to16.4 ft with the use of an internal microphone. 3. Portable and handheld ultrasonic dog anti bark training device. 4. A harmless safe and human way to stop dog barking. 5. Suitable for dogs of all breeds. 6. Two-color LED shows good(Green light) or low battery(Red light). 7. Durable and lightweight for indoor and outdoor dog training and dog bark control. 8. Built-in rechargeable battery and equipped with USB cord. Fully charged in 3 hours, and continue work for 30 days. Working principles of this ultrasonic dog anti-barking training tool 1. Press the button for unwanted dog barking and the speaker emits sonic, this sound can only be heard by dogs, and is silent to humans. 2. When you press the ON-OFF button of the device, you will hear a slight beep sound and a green light will illuminate on the ultrasonic anti bark device. The anti barking device is functioning normally. 3. Press the ON-OFF button to starts working, release the button to stop working, and the maximum working time is 6 seconds each time. Started by a high-pitched sound that is safe and effective. The dog should stop barking, as it will associate its bark with this unpleasant noise. 4. After this is repeated a few times, the dog will learn that its barking will bring uncomfortable feelings to itself. By so, it will decrease unwanted barking gradually. Note 1. Not recommended for dogs under 6 months or small dogs under 4.5lbs. 2. May is not effective on old dogs or dogs with hearing problems. Package: 1x Ultrasonic Bark Device, 1x USB cable, 1x Lanyard, 1x User Manual User's Guidance?The ultrasonic anti-bark device doesn't effective in dogs with hearing problems and we don't recommend using this product on dogs under six months as it may disrupt the dog's development in hearing. Training is required to achieve highly effective and long-lasting use. We are committed to providing the best service, please feel free to contact us if have any issues, we will solve your problem within 24H. Portable Hand-held Anti-barking Device? This anti barking device is designed portable and lightweight, you can put it in your pocket or bag, with a wrist strap and easy to carry when you walk or train your dogs and control the barking, and the anti barking device is also easy to train with one button. Only need to press the button of the anti barking device and point it at the dog. The LED indicator lights up in green to indicate the working status and an ultrasonic sound is emitted. Safe and Humane Anti Barking Device?The ultrasonic bark device uses high-pitched ultrasonic technology is harmless to pets that are higher than the human hearing range, which can effectively stop barking within the safe hearing range of the dog, the anti-barking deterrent control device will cause the dog's attention without pain stimulation and will not damage the dog's hearing, helping your dog to correct bad behaviors. Indoor and Outdoor Dog Anti Bark Device?This portable anti barking device with a 16.4ft effect range, perfect for training your dogs at home, outdoors, traveling, helping your dog adapt to ultrasound and correct bad behavior. You can even use this bark control device to stop your neighbor's dog from barking. But the smaller the range, the better the effect. Updated Ultrasonic Anti Barking Device?Wango 2022 newest anti-bark dog training device uses the latest ultrasonic technology, which is safe and effective for stopping dog barking, suitable for correcting our own dog's misbehavior like excessive endless barking, eating unsafe food, fighting, digging, and stopping others' dog aggressive.