⭐【5 Levels Adjustable Sensitivity】With 5 sensitivity levels, you can choose the most appropriate sensitivity according to the situation of your dog. The combination of warning sound and static shock trains your dog effectively and harmlessly. ⭐【UPGRADE INTELLIGENT DETECTION CHIP】Intelligent barking vibration detection chip prevents false triggering. The bark collar is only triggered by your dog's sound combined with vibrations. And it won't be triggered by other dog's barking. ⭐【USB chargeable】 This anti bark collar is equipped with USB charging cable and energy-saving design. It can be fully charged for about 1 hour. When fully charged, it can use for 7-10 days to avoid the replacement of battery. Energy saving; Easy to carry. ⭐【Suitable for all sizes dogs】Adjustable dog bark collar. The diameter of collar belt can be stretched from 1.08 inches to 7.08 inches, which is designed for all 6.6 to 66 pounds mini, small, medium and large dogs. ⭐【Long Service Life and Satisfaction Warranty】This bark collar for dogs is rechargeable, economical and environmentally friendly. Easy to charge, using high efficiency and lithium battery. If you are not satisfied with our product, feel free to tell our professional customer service team.