The Premier Pet Bark Collar helps reduce your dogs barking quickly and safely. This collar offers multiple correction options, including tone, vibration, and 7 levels of safe static stimulation. It automatically adjusts to your dogs barking behavior, starting at the lowest level of static stimulation and increasing only if barking persists. This waterproof bark collar features a nylon strap that is adjustable up to 28, making it a great choice for dogs of all sizes. Features an LED display with a bark counter that lets you monitor your dogs barking activity. With up to 3 weeks of battery life, a low battery indicator and a quick 2-hour charge, you can rely on consistent performance.