【Anti-bark collar with 2 modes】- 2 safe humanized working modes, no harm to your dog. It will beep or buzz and vibrate when barking is detected. The anti-bark collar will continue to work to the next correction level until the dog stops barking. According to your pet's nature and behavior, select a trigger sensitivity from 1 to 7 via the power button to stop your dog from barking. 【Intelligent anti-barking device】-Intelligent anti-barking device, which can effectively and safely filter out other irrelevant sounds and prevent false triggering. Only your dog's barking will trigger the anti-barking collar. You can test this by blowing or shouting into the sensor microphone on the back of the receiver. 【The dog bark collar is rechargeable and waterproof】 - The anti-bark collar contains a built-in USB rechargeable battery. It can be fully charged in about 2-3 hours and can be used for 15 days. IP67 waterproof design, suitable for dogs bathing and showering in summer. If you have any