Classic Design - No BarkVibrate Dog Collar (Extra Small & Small Dogs 4lb to 24lb) Adjustable Vibration 7 Levels Sensitivity Control - No Bark Dog Collar - Anti Bark Collar - No Bark Collar * Adjustable nylon strap collar suitable for ( Extra Small and Small Dogs 5lbs to 20lbs ) Small and large electrodes to suit varying fur thickness on dog. 7 levels of sensitivity. * Effective and easy to use. This anti no bark dog collar stops unwanted barking with progressively increasing warning sounds * First bark initiates a warning tone. This warning tone creates a consistent pattern which the dog can intuitively recognize. Dog quickly relates the warning tone to their barking and learns to stop barking vibrating stimulus. * The built-in microprocessor sensor has 7 levels of sensitivity! The "+" /"-" buttons are used to adjust the sensitivity to the bark according to the size of your dog. The sound and vibrations in your dogs throat will distinguishes from your dogs bark - environmental background noises. * Long-life battery, 30 Day Money Back, bark collars, no bark dog collar, bark control collar for small dogs, small dog collars, barking shock collar, barking vibrate collar,small shock collar, small vibrate collar, anti bark collar, bark control, training dog collar, anti barking for small dog, anti bark control, no bark collar small, small dog barking collar, extra small dog shock collar, anti bark, dog training collars,