POP VIEW Bark Collar [New Version] Humanely Stops Barking with Sound and Vibration. NO Shock, Harmless and Humane. Small Dog Bark Collar, Medium Dog Bark Collar HUMANELY SILENCE your dog's annoying barking without painful, anxiety-causing shocks. Dogbark Intelligent No Bark Dog Collar uses painless sound and vibration stimuli to deter unwanted, annoying barking. NO SHOCK UNIT detects movement of your dog's vocal chords. It then emits audible warning beeps that are followed by vibrations if the barking continues. Your dog will quickly and easily associate these with his barking.