PetSafe Spray Bark Dog Collar, Anti-Bark Device for Dogs 8 lb. and Up, Fits Up to 27 in. Neck Circumference ELIMINATE OR REDUCE EXCESSIVE BARKING - uses a burst of citronella spray to discourage barking; unscented spray refills also available WATER RESISTANT - suitable for light rain or wet grass exposure LIGHTWEIGHT - designed for dogs over 6 lb. with neck sizes up to 24" 300-400 SPRAYS PER CAN - each refill for collar holds 25-30 sprays Uses replaceable 6-volt alkaline battery (included) 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 packaging of the box may vary