Description REDUCE EXCESSIVE BARKING: Uses a burst of citronella spray to discourage barking; unscented spray refills also available 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 300-400 SPRAYS PER CAN: Collar holds 30-40 sprays each refill FOR DOGS 8 LB AND UP: Adjusts to fit neck sizes up to 22 in Is Discontinued By Manufacturer : No Product Dimensions : 3 x 5 x 8 inches; 11.2 ounces Manufacturer recommended age : 1 month and up Item model number : PBC00-11283 Department : Pet Supplies Batteries : 1 Lithium Metal batteries required. (included) Date First Available : September 30, 2004 Manufacturer : Radio Systems Corporation Best Sellers Rank: #257,815 in Pet Supplies (See Top 100 in Pet Supplies) #757 in Bark Collars Customer Reviews: 3.2 3.2 out of 5 stars (795) The Elite Little Dog Spray Bark Collar is our smallest bark control option, designed for your smallest furry friend. We created a compact, lightweight design that wont slow your energetic buddy down on his races through the backyard. This spray bark collar detects your dog barking and immediately releases a gentle burst of spray to distract him from the mailman or the neighbors cat. Your dog will never be corrected because of another dogs bark or a loud outside noise because the dual detection technology in this collar must sense both vibration and sound before spraying. Because the spray is immediate and consistent, your dog will learn to associate his barking with a correction and change his behavior within 2 weeks. Thats a win for you, your furry best friend, and your mailman. Your pet deserves the best. Trust PetSafe to help keep your pet healthy, safe and happy.