[Rechargeable and Easy to Use]: Our sonic bark control device can be easily hung on a tree, garden fence, table or dog house, making it very convenient for you or your neighbor's barking dog. The bark stopper has a built-in 1500mAh rechargeable battery, which can be used for 30 days after charging for 5 hours. It is simple to operate and easy to use. [Durable and Waterproof Dog Silencer]: This anti-barking device has an IPX4 waterproof housing that can withstand all kinds of harsh weather, so you don't have to use your dog barking control device because of the weather, whether it's sunny, rainy or snowy , our bark arresters are built to stand up, and you can rest assured that the dog deterrent is safe for outdoor use. [Safe and Effective Barking Box]: Our ultrasonic dog bark control device uses advanced ultrasonic technology to stop excessive barking without harming your beloved pet. Gentle yet effective ultrasound can be used as a communication tool to teach your dog when to stay calm. Our anti-barking devices are designed with your pet's health in mind and are engineered to be safe for dogs. [33 Feet & 3 Adjustable Modes]: Our ultrasonic bark stopper has three adjustable modes, you can choose the one that suits your dog according to your dog's specific situation. 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 device can cover a range of 33 feet, ensuring effective coverage of a sizable area. Colour:Black Material:plastic Package Contents: 1 x Anti Barking Devices Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.