★BARK COLLAR HUMANELY SILENCE your dog's annoying barking without doing harm to your dog and even no shock. Intelligent Dog bark No Bark Dog Collar uses harmless sound and vibration to stop unwanted, annoying barking. ★BARK COLLAR NO SHOCK UNIT monitors movement of your dog's vocal band. The dog then will be warned by audible warning beeps then vibrations will followed if the barking continues. Your dog will quickly and easily associate these with his barking. ★BARK COLLAR UNIVERSAL SIZE dogs could wear it. This bark collar comes with adjustable nylon strap and it is suitable for all kinds and sizes of dogs. ★BARK COLLAR DURABLE & ALL WEATHER NYLON bark collar would not be effected by rain or snow. The resistant lowest temperature up to 450 F degrees. 2 points of pressure to unlock, guard against the bark collar falling out. ★BARK COLLAR 60 DAY MONEY BACK GUARANTEE ensures your benefice. We will refund or replacement if you are not 100% satisfied with the product.