Dog Bark Deterrent DevicesThe 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, simple to operate and easy to use, it's a friendly dog barking device for your furry friend (please charge the device before use).Safe & Effective for Dog & HumanOur Dog Barking Control Device is not only safe for your furry friend but also highly effective in reducing excessive barking. It emits a gentle ultrasonic sound that is harmless to dogs but effectively discourages them from barking excessively.Up to 50Ft Range Dog Barking StopperWith a range of up to 50 feet, our Dog Barking Control Device covers a wide area, making it suitable for both indoor and outdoor use. Whether you're at home or out in the yard, this device provides reliable bark control.Waterproof Dog SilencerThis dog deterrent devices has an IP45 waterproof casing to withstand all kinds of bad weather, so you don't have to use the no barking device for dogs because of the weather, no matter in sunny, rainy, or snowy days, our bark stopper can stand up to the test, and you can rest assured that the anti barking devices is safe to use anywhere.Up to 50Ft & 3 Adjustable ModesOur ultrasonic ultrasonic dog bark deterrent outdoor has three adjustable modes, you can choose the one that is suitable for your dog according to your dog's specific situation. Mode 1 (15khz): more suitable for small dogs, mode 2 ( 20khz): suitable for docile dogs, mode 3 (30khz): suitable for large dogs or active dogs. Our anti dog barking device can cover a range of 50 feet, ensuring effective coverage of a considerable area.