Features of the anti-bell device dogs:1. Using ultrasound to train dogs or stop barking is a safe, humane and effective method.2. Detects a dog's barking up to 5 meters away using a built-in microphone.3. Suitable for dogs of all breeds.4. Portable, durable and lightweight design, suitable for dog training and barking control indoors and outdoors.5. Built-in battery and equipped with a USB cable. Fully charged in 3 hours and continue working for 30 days.Working principles of this anti-barking ultrasonic device:1. Press the button for unwanted dog barking and the speaker emits sound, this sound can only be heard by dogs and is mute to humans.2. When you press the on/off button of the device, you will hear a quiet beep and the anti-bell device dogs lights up green. The anti-bark for dogs works normally.3. Press the ON/OFF button to start working, and release the button to finish the work. The maximum working time is 6 seconds each. Started with a high tone that is safe and effective. The dog should stop barking as it combines his barking with this unpleasant sound.4. After this has been repeated a few times, the dog will learn that his barking will cause unpleasant feelings. This gradually reduces unwanted barking.Please note:1. Not recommended for dogs under 6 months or small dogs under 4.5 lbs.May 2 is not effective on old dogs or dogs with hearing problems.3. The anti-bell device dogs should be facing the dogs within a range of 16.4 feet.Package:1 x anti-barking ultrasonic device.1 x USB cable.1 x lanyard.1 x user manual.

• Upgraded anti-barking ultrasonic device: the anti-bell device dogs uses the latest ultrasonic technology, which is safe and effective to stop dog barking, suitable for aggressively stopping the misbehavior of our own dog such as excessive endless barking, eating unsafe food, fighting, digging, and aggressively stopping the dog of others.

• Anti-bell device for dogs indoors and outdoors: This portable anti-barking device for dogs with an effective range of 16.4 feet is perfect for training your dogs at home, outdoors and when travelling and helps your dog adapt to ultrasound and correct bad behaviour. 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.

• Safe and humane anti-barking device: the anti-barking ultrasonic device uses high-frequency ultrasonic technology, which is harmless to pets that are higher than the human hearing area and can effectively stop barking within the safe hearing area of the dog, the anti- - the barking deterrent control device attracts the dog's attention without pain stimulation and does not damage the dog's hearing and helps 9999999to correct.

• Portable anti-barking for dogs: This anti-bell device dogs is portable and lightweight, you can put it in your bag, with a hand strap and easy to carry when you go for a walk or train your dogs and control barking, and the anti-bark for dogs is also easy to train with a button. You just need to press the button of the device and point it at the dog. The LED indicator lights up green to indicate the working status, and an ultrasonic sound is emitted.

• Instructions for the user: the anti-barking ultrasound device is not effective for dogs with hearing problems and we do not recommend the use of this product for dogs under six months, as it can interfere with the dog's hearing development. Training is required to achieve highly effective and long-lasting use. We strive to provide the best service. If you have any problems, please feel free to contact us. We will solve your problem within 24 hours.