PetSafe Deluxe Bark Control Collar (PDBC-300) for Dogs 8 lb. and Up, Waterproof, 3 Modes of Static Correction 3 CORRECTION MODES ( LOW, MEDIUM, HIGH) - with progressive correction you pick the right mode for your dog. As your dog barks, it will increase through 6 levels of correction to reduce or eliminate excessive barking PERFECT BARK DETECTION - patented system prevents false corrections from other noises including another dog barking WATERPROOF COLLAR - for all of your dog's outdoor activities AUTOMATIC SAFETY SHUT-OFF - will stop correction after 30 seconds FOR DOGS 8LB AND UP - with neck sizes up to 28" BATTERY INCLUDED - Uses the easy to install PetSafe RFA-67 Call, chat or email with our expert PetSafe US-based customer care specialists six days a week; They are waiting to assist you and your pet with your product needs at 1-800-732-2677 or by email at ccc3@petsafe.net Manufacturers warranty is only valid when purchased from an authorized retailer