Electrostatic Anti-bark collar for small dogs, Petsafe PBC19-12443 deluxe This collar uses several features designed to shorten the training phase and promote good behavior. The anti-bark collar uses both vibration and sound sensors, there is double detection. Static stimulation is administered through the contact points only if both vocal cords vibration and barking are detected. Adjustable collar up to 40 cm Battery RFA188 Patented technology 10 automatically adjustable correction levels Low battery indicator light Waterproof