Safely Stops Barking - 15 levels of automatically adjusting static correction help teach your dog to stop excessive barking. Learns Your Dog’s Bark - Our unique bark-sensing technology learns your dog’s bark to prevent your dog from receiving a false correction, even other dogs’ barking. Waterproof Collar - Continue bark training in any environment, indoors or out, with the waterproof collar. Rechargeable Battery - Get up to 40 hours of use, and quickly recharge in 2 hours using the included USB chargerBark Collar You Can Trust - For 25 years, we have been the trusted brand in creating safe, high-quality, training products to help you and your pet live happy together