Fullsexy No Bark Collar for Dogs - Extremely Effective No Bark Collar with No Pain or Harm, 7 Different Bark Sensitivity Levels, Bark Collar for Small Medium and Large Dogs. The latest technology chip: built-in smart barking detection chip. When the dog is calling, the first two triggers are only voice warnings, and the third one starts with a slight vibration. Very effective: 7-step sensitivity adjustment, can be adjusted according to the size of the dog's voice. It only needs to stop buzzing to eliminate irritating sounds and vibrations. Widely used: Whether your dog is a Corgi or a bigger Golden Retriever, our collar is designed for them. The adjustable length ensures the maximum comfort of the dog, and the sound and vibration stimulation will certainly attract their attention. No interference trigger: The dog collar will not react to the bark of other dogs and avoid any abnormal hum and vibration. It only reacts when your dog calls Usage suggestion: In order to obtain the best use effect, we recommend that customers adjust the collar properly, not too tight or too loose. Do not put the collar on the dog for more than 5-10 hours. Check the battery once a week to make sure the battery is fully charged