【Smart Dog Bark Control Collar】This dog bark control collar no longer false triggers. Intelligent detection design can detect dog barking on particular frequency and decibel, filter out other unrelated sounds. Growling, shaking, scratching or barking from other dogs will not trigger the collar. The dog bark control collar is triggered only by your dog’s barking. 【Safety Bark Control Collar with 2 Modes】Our dog bark control collar works in automatic mode, in which the modes Sound and Vibration are combined to effectively and safely stop dog barking. It helps your dog understand that barking is undesirable when he vibrates and beeps. Useful when you are away from home and your dog stays alone. 【Adjustable Sensitivity】This dog bark collar has 2 “+ -” buttons used to adjust the appropriate sensitivity of the bark collar. level 1-7 depending on the size of the dog. The higher the sensitivity level, the easier it is to trigger the collar. level 4 is the most sensitive setting. 【Rechargeable