Rechargeable and Easy to Use: Our sonic anti-barking device can be easily hung on a tree, garden fence, table or kennel, very convenient for your or your neighbor's barking dog. The anti-barking device has a built-in 1500 mAh rechargeable battery, which can be charged for 5 hours and can be used for 30 days. It is simple to operate and easy to use. It is a friendly dog barking device for your furry friend (please charge the device before use). Durable and Waterproof Dog Silencer: This anti-barking device has an IPX4 waterproof shell to withstand all kinds of bad weather, so you don't have to use the dog barking control device because of the weather. Whether it is sunny, rainy or snowy, our barking stopper can stand the test. You can rest assured that this dog deterrent device is safe to use outdoors. Safe and Effective Barking Box: Our ultrasonic dog barking control device uses advanced ultrasonic technology to stop excessive barking without harming your beloved pet. The gentle but effective ultrasonic wave can be used as a communication tool to teach your dog when to be calm. Our anti-barking device is designed with your pet's health in mind and is carefully crafted to be safe and harmless to dogs. The humanized design ensures your dog learns to control excessive barking without causing any harm. Automatic Anti-Barking Device: Tired of the constant noise? The automatic anti-barking device is your answer. Our dog deterrent automatically senses and responds to excessive barking, helping you regain control of the noise level indoors. Not only suitable for indoor home use, but also suitable for placement outdoors, without constant monitoring, our device automatically detects and responds to barking, providing a worry-free solution to the problem of constant barking. 33 feet and 3 adjustable modes: Our ultrasonic bark stopper has three adjustable modes, you can choose the mode that suits your dog according to the specific situation of the dog. Mode 1 (15khz-30khz): More suitable for large dogs or active dogs, Mode 2 (20khz): Suitable for docile dogs, Mode 3 (30khz): Suitable for small dogs. Our anti-barking dog device can cover a range of 33 feet, ensuring effective coverage of a fairly large area.