STOP dog barking collar - SOUND + SHOCK/ item no.: HL50-052 Humanely Stops barking with progressively increasing sound and shock. The stop dog barking collar / anti 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. The output level of sound and shock is increased gradually as barking continues, giving your pet plenty of warning before it becomes painful. The Bark Terminator's unique pattern of increasing sound and shock quickly teaches your pet that it is its own bark that is causing the discomfort. The result is a quicker, less painful and more humane approach to bark control. FEATURES + SPECIFICATION: High effective bark control collar with high frequency sound and shock. Level of sound and shock is increased gradually as barking continues. Adjustable stretch collar to fit different sizes of dog. Red light working indicator. High intelligent voice recognition feature minimizes false triggering. Powered by 1x 6V 4LR44 battery (included). Water resistant construction. PACKING: Each piece in one white box, dimensions: 80 x 90 x 40mm, weight 91g. Carton: 120pcs / 42.5 x 34.5 x 30cm N.W.: 11.8kg, G.W.: 12.8kg