Check the listing for details. US Automatic Anti Bark Barking All Size Dog Shock Control Device Training Collar. Condition: New. Listed at 9.54 USD. US Seller, Ship Fast Bark Stop Collar Adjustable from 12'' - 20'' Color: Black Material: Nylon, Plastic Adjustable Range: 12'' - 20'' Control Method: Static/Shock Package Include: 1X Bark Stop 1X Adjustable Strap 1X Manual 1X 6V Battery Product Feature: 1. Anti-barking system that uses high-frequency sound waves and electrical shock stimulation 2. Vibration bark sensor - detects when your dog is barking, and then activates the dual stimulations 3. Compact and lightweight - will fit snugly to your dog 4. Comes with a standard 6V battery - your control collar will be ready to use as soon as it arrives 5. Effective on dogs from 2kg to 60kg 6. High quality nylon strap adjusts from 12 to 20 inches 7. Weatherproof unit - This unit is rain resistant so is perfect for using in any weather