AUTOMATED TRAINING: The Anti-Bark Collar stops barking with progressively increasing warning beep and shock which is controlled by a microprocessor distinguishing your dog's bark from other environmental noises and automatically delivers sound and shock after each bark. ADJUSTABLE SENSITIVITY LEVELS: Our dog bark collar contains 5 sensitivity levels, you can choose the sensitivity level adjusts according to how often your dog barks with temperament learning technology. SAFE ENOUGH: The no bark collar with dual stop anti-barking mode works by no harm vibration and sound, to protect the dog, if the continuous stimulus reaches the 5 levels, then the collar will stop working for 2 minutes. FITS FOR ALL DOGS: Our bark collar with the adjustable straps, no matter your dog is small or large, and it will perfect fit to wear. But please confirm your dog is healthy before using the bark collar. NO RISK GUARANTEE: We are confidence about our product and we guarantee you will satisfy with it, so if you have any question about the bark collar or don’t satisfy with it, you can email us, we provide full refund about the quality problem. Buy it now with no risk!