YiHorn Anti Bark Stop Controller No Barking Electric Shock Vibration Dog Pet Training Collar with 7 Levels Adjustable Sensitivity Control and Stimulation of Safe Warning Beep and Vibration (Black) It is a humane electric training collar and harmless to your dog when barking, warning sounds and harmless static stimulus, Adjustable nylon collar senses vibration in dog's throat during barking 7 levels of sensitivity adjustment by"+"and "-" buttons, to be suitable for different dogs 2 training modes: beeper and static shock. 7 different combinations of beeper and static shock to train dogs effectively The anti bark collar turns into 1-minute-automatic protection mode after 7 times consecutive working; Adjustable leather leash from 6" to 30" to suit for different dogs 2-year warranty; Not recommend to use it for training puppy, especially below 8 lbs, but for 15-120 pounds dogs; Easy air blowing method to test the collar