Anti-Bark Shock Collar with Adjustable Voice Control Adjustable sensitivity Brand new high-quality Electroinc Anti-Bark Dog Training Shock Collar. Microprocessor controlled.The bark Terminator is controlled by a microprocessor which distinguishes your dog's bark from other. Environmental noises and automatically delivers sound and shock stimuli after each bark. Automatically increases tone and shock stimuli as barking persists. Effective on a 5-150 pounds dog and up to 12" neck.