【Automatic and Convenient】: Unlike traditional dog training collars, this anti ultrasonic dog barking device can automatically detect dog barking, emit ultrasonic sound and stop it, completely freeing your hands to stop barking your dog or your neighbour’s dog. 【100% Safe and Harmless】: The Dog Bark Control uses high-frequency ultrasonic technology, which will not cause any harm to humans or to dogs. But it can easily attract dogs’ attention and prevent them from continuous and excessive barking. 【Rechargeable and Durable】: The Dog Anti Bark Device has a built-in rechargeable lithium battery of 1500mAh which allows it to 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 water-resistant ABS , weather and crushing, which gives it a longer lifespan and allows it to be hung anywhere, indoors or
