Pet Safe Big Dog Deluxe Anti-Bark Collar 18+KGThe PetSafe Deluxe Anti Bark Collar has two primary features designed to shorten the training phase and promote good behaviour. First, the Deluxe Anti Bark Collar has a unique patented sensor that provides the most reliable bark detection available. The Deluxe Anti Bark Collar uses both vibration and sound sensors (dual detection) to discriminate each bark from other external noises. A Static Correction is administered through the Contact Points only