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: Train 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 charger SIZING: Collar fits dogs 8 lb and up and the adjustable strap fits pets with a neck size up to 23 in BARK SOLUTIONS 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 NO BARK PROMISE: If this product is not meeting the needs for you and your pet, simply contact a PetSafe Customer Care Specialist by phone, email or chat and we will help you find a product that fits your needs