【100% Safe and Harmless】: The anti bark device uses high frequency ultrasonic technology, which will not cause harm to humans or dogs. But it can easily attract dogs’ attention and prevent them from continuous and excessive barking. 【Automatic and Convenient】: Unlike traditional dog training collars, this ultrasonic dog bark stopper can automatically detect dog barking, emit ultrasonic sound and stop it, completely freeing your hands to stop your dog or your neighbor’s barking. /p> 【Rechargeable and durable】: The SiBei anti bark box has a built-in 1500mAh rechargeable lithium battery that can be recharged via a USB cable. Only 5 hours full charge can work continuously for 30 days. (Note: the output current is not more than 2A. ) 【Waterproof and Durable】: The shell of this ultrasonic dog bark control device is made of sturdy IPX4 ABS, waterproof, weatherproof and crushproof, which gives it a longer lifespan and allows it to be hung anywhere, anywhere. inside as well as outside. (Take
