Waterproof Dog Bark Control Collar JK TECH Rechargeable Anti Bark Shock Collar Adjustable Sensitivity for Small Medium Large Dogs (Black) The Anti-Bark Collar 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 To protect the dog, if the continuous stimulus reaches the 7 levels, then the collar will stop working for 1 Minutes 6 intensity levels for a wide variety of dispositions Waterproof and Rechargeable;easy testing method to check the No Bark Collar On/off and select the intensity level of stimulation;off position is to turn off the Bark Collar