Effective Bark Stop Device Our gentle pet bark stop device offers a safe and effective solution to stop barking dogs. Dog bark stop device can effectively train your pets. dogs to stop unwanted behavior such as barking, fighting, digging, eating dangerous food, fighting, etc. You can have a beautiful dream Safe for your dogs Sound frequencies between 25 and 30 kHz have been shown to be harmless to dogs' hearing and will not cause physical injury. Since the average human hearing range is 20HZ - 20KHZ. Sonic Bark Deterrent emits 24kHz ultrasonic sound, the sound catches your dog's attention safely and you won't hear it, you don't have to worry about the dog's safety. p> You can easily carry Our dog training device is designed to be portable and hand-held, you can use it anywhere to train your dog and put it in your bag or pocket, this that makes it perfect for indoor and outdoor use. The small device fits perfectly in your hand. Long range control and rechargeable Dog bark deterrents are effective in a range of 16.4 feet. We no longer have to prepare AA batteries. The built-in battery with a capacity of 1200mAh can be completely charged in 5 hours, supporting 15 days of regular use Works on dogs of all sizes Bark control devices can be used on dogs of different breeds and sizes. But not recommended for dogs under 6 months because it can disrupt their hearing development, and is also not effective in aggressive dogs or dogs with hearing problems. For best effect, do not use it in noisy environments Product Anti-barking device is a harmless training tool to stop unwanted barking. Try this dog bark control deterrents stopper and gently say goodbye to those endless barking. You can train the dogs repeatedly in this way and make them form a conditioned reflex to the sound and become quiet. Feature of this dog bark control device: 1. Uses sound to deter unwanted dogs barking. 2. Detects the sound of barking up to16.4 feet with the use of an internal microphone. 3. The harmless safe and human way to stop dog barking. 4. Suitable for dogs of all breeds. 5. Two-color LED shows good (Green light) or low battery (Red light). 6. Durable and lightweight for indoor and outdoor use. 7. Built-in rechargeable lithium-ion battery and equipped with USB cord. Fully charged in 5 hours, and continue work for 5 months. Working principles of this dog 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, you will hear a slight beep sound and a green light will illuminate on the device. The products are 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 the 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 the unwanted barking gradually. Packagel: 1 xAnti-bark device 1 xUSB Wire 1 xWrist Rope