Naturepets Bark Collar Small Medium Large Dogs, Humane Training Anti Barking Rainproof Device, Vibration Shock and Beep Harmless Control for Dogs Over 6 lbs ANTI-FALSE INTELLIGENT CHIP - As a result of using Dog Bark Collar for small and medium dogs, we have upgraded chip to be more humane and less sensitive. Finally you can get on top of your dog's uncontrollable barking, ultimately making you and your dog happier. SAFE AND EFFECTIVE: At Naturepets, your dogs wellbeing is our top priority. The No-Bark Collar sends harmless warning shocks, progressing through the 7 sensitivity levels. For your dogs protection, it will stop working for 1 minute should your dog continue to bark. FITS MOST BREEDS: From Beagles to Dobermans and almost virtually any dog in between, our No-Bark Collar fits nearly any breed. To help guarantee the safety and comfort of your pet, we generally recommend the collar for dogs ranging from18-120 lbs. great christmas gift for any dog lover READY TO USE: As soon as your Anti-Bark Collar arrives, youll be set to start training. Simply slip it around your dogs neck and the system is ready to go. Every order includes a lightweight receiver that features a replaceable 6-volt battery for convenience.