The Premier Pet Bark Collar discourages barking for all-size dogs. If your dog barks, the collar detects the vibration of your dog’s vocal cords and issues a gentle static correction. This correction will not be triggered by the bark of any dog except the one wearing the collar. With 15 levels of automatically adjusting static correction, this anti-bark collar ensures your dog receives the best level for his/her temperament. The correction will start at the lowest level and will only increase if barking persists. No programming is required. This water-resistant collar has a nylon strap that is adjustable up to 28”, making it a great fit for both smaller and larger dogs. A low battery indicator on the collar will alert you when the collar battery should be replaced. A built-in safety feature will automatically shut off the collar for three minutes if your dog barks 15 times or more within a one-minute 20 second period. Live peacefully together with your dog, small or large, by discouraging barking when using the Premier Pet Bark Collar. Product Features: Discourages barking for all size dogs Issues gentle static correction when dog barks. Not triggered by other dogs’ barking 15 levels of static correction that automatically adjust to the best level for your dog, levels increase only if barking persists. No programming required Water resistant bark control collar with a nylon strap that is adjustable up to 28” and a low battery indicator that alerts you when the battery should be changed Built-in safety feature: if your dog barks 15 times or more within a one minute 20-second period, the bark collar will automatically shut off for three minutes For dogs six months and older weighing more than 8 lbs. U.S. customer support available by phone at (888) 640-8840 Includes bark control collar, 6V alkaline battery, product manual 1 Year Warranty (Model GBC00-16925) Specifications: Batteries Included: Yes Batteries Required: Yes Battery Count: 1 Carrying Handle: No Collapsible: No Costume: No Digital Feeder: No Dishwasher Safe: No Folding: No Intended for Pet Size: Other Intended for Pet Weight: 8 lbs. and More Lifestage: All Machine Washable: No Maximum Pet Chest Size: 28 inches Model Number: GBC00-16925 Primary Material: Nylon Product Type: Training Supplies Reflective: No Retractable: No Safety Features: Automatic shut-off after 15 barks Safety Lock: No Tools Included: No Type of Training: Bark Control Waterproof Material: Water-Resistant upc: 729849169258 Pet Type: Dog