Petiner [New Model] Harmless No Bark Dog Training Collars Anti Bark Control with 7 Levels Button Adjustable Sensitivity Control Tone/Vibration/Shock for 15-120 Pounds Dogs

This New Model Petiner Anti-Bark Collar improved with a better senser and control chip. It helps to effectively stops barking with progressively increasing sound 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, most of the pets will quickly understand the new sensation is telling her to be quiet. It can be adjusted to control the sensitivity of the voice, according to the size of dogs barking How to it works: At the first bark, the Collar applies a short warning tone .If a second bark occurs within thirty seconds, a more intense tone is sounded. From the third bark, a more intense tone is sounded along with a short , mild shock. This pattern is repeated through 7 correction levels. If your dog continues to bark, the more intense sound and shock are applies until your dog stops for thirty seconds, and then it will automatically resets to the first "tone only" level of correction.If the continuous stimulus reaches the 7 levels, then the Collar will stop working for 1 minutes to protect the dog.