Dog Bark Control Collar - Battery Powered Latest Model Anti-bark Device. Stimulation of No Harm Warning Beep and Vibration. Static Shock with 7 Adjustable Sensitivity Control Levels. STOPS BARKING FAST AND SAFELY - High-frequency sound waves, vibration and static shock to stop dog's barking fast, safely and effectively. Tested for safety and health. ADVANCED PROCESSOR - Throat vibration sensor activation collar will distinguish your dog's bark from other noises. WORKS FOR ALL DOGS - Lightweight collar. Perfect for any dog size. HARMLESS AND EFFECTIVE - Very humane collar. Adjustable sensitivity. FAST SHIPMENT FROM THE US - All products and packages are inspected in the US. Shipped from the US.