Petiner Bark Collar 2018 UPGRADED No Bark Collars Dog Bark Collar Anti Bark Training Collar Bark Shock Collar Bark Control Collar for Small Medium Large Dog 11-130LBS with 2 Mode 7 Sensitivity Levels UPGRADED INTELLIGENT CHIP--- Intelligent barking vibration detection chip prevents false triggering. Only your dogs sound combined with vibrations of sound will trigger the sensors while other dogs barking nearby can not trigger the Bark Collar. 7 ADJUSTABLE SENSITIVITY LEVELS,MORE FRIENDLY & EASY OPERATE--- This bark collar has 7 adjustable sensitivity levels and 2 modes(sound, shock), 0-7 adjustable grade separately. You can choose a appropriate sensitive level and mode for your pet, stop barking without any harm effectively, easy operation. OVERVOLTAGE PROTECTION & SAFETY AUTOMATIC MODE--- If the electrostatic stimulation continues for 7 times, the bark collar will be suspend for 1 minutes in order to protect your dog. The overvoltage protection to ensure your dogs safety. EFFICIENT BEHAVIOR MODIFICTION,NO BARK COLLARS--- Change barking behavior for dogs efficiently and safely. The combined noise and vibration creates a consistent pattern your dog understands. Dogs are quick learners,once they realize they can avoid the annoying beep they will stop barking or bark less. EFFICIENT BEHAVIOR MODIFICTION,NO BARK COLLARS--- Change barking behavior for dogs efficiently and safely. The combined noise and vibration creates a consistent pattern your dog understands. Dogs are quick learners,once they realize they can avoid the annoying beep they will stop barking or bark less.