★NEWEST UPGRADE DOG BARK CONTROL CHIP: 7 adjustable sensitive level and 3 training modes can be customized for all dogs. Our bark collar with Intelligent chip prevents false triggering,Only your dog’s Sound combined with Vibrations of Sound will trigger the sensors while other Dog’s barking will not. ★HUMANE & NO HARM: Our dog bark collar is gentle,humane and safe. Our anti barking collar uses progressively increasing vibration and shock to stop your dog’s barking instead of painful methods. Choose a suitable sensitive level and model for your dog can effectively stop barking and harmless to dogs. ★FIT ALL SIZE 6-120LBS DOGS: Our no bark collar has a 7.9-23.6inch adjustable strap makes it suitable for most dogs between 6lbs-120lbs. The strap is made from comfortable reflective nylon which will not harm your dog and can easily find your dog at night. ★USB RECHARGEABLE & RAINPROOF: Our bark collar built-in a 280mA Li-ion battery can be fully charged in about an hour and last about 14 days. Our anti bark collar is also rainproof, so your dogs can wear the collar playing in the rain but swim with collar is not suggested. ★SATISFACTION SERVICE & GUARANTEED: Our bark collar adopt newest upgraded anti barking smart Chip. High quality with 12 months product warranty,30 days product replacement or refund if you are not satisfied. If you meet any issue with your bark collar, don't hesitate please contact us!