PetStar Advanced Version Bark Collar for For Small, Medium Dogs Training System Electric No Bark Control No Harm Warning Beep and Vibration Only, NO SHOCK!! - 2 Pack
How It Works:
When your dog barks, a microphone in the collar picks up the sound and sends an ultra-high frequency sound to interrupt your dog's bark, without hurting his sensitive ears. The tone is annoying but harmless and inaudible to most people. If a second bark occurs within thirty seconds, a more intense tone is sounded. From the third bark, a more intense tone is sounded along with a vibration. This pattern is repeated through 7 correction levels. The first two levels are only with progressively warning tone. If your dog continues to bark through the rest five levels, the more intense sound and vibration are applied until your dog stops for 60 seconds, and then it will automatically reset to the first "tone only" level of correction. If the continuous stimulus reaches the 7 levels, then the Collar will stop working for 1 minutes to ensure protection of the dog.
STOP UNWANTED BARKING THE HUMANE WAY: Petstars Advanced Version Dog Collar stops barking with progressively increasing warning sounds and vibration. In fact, many dogs correct their behavior through the audio feedback alone, and no vibration is needed.
ENSURE YOUR DOG'S SAFETY: There is no shock or anything of that nature, just harmless warning tone and a vibration.
MORE EFFECTIVE: We have found that this technique of progressively increasing sound and vibration is not only more humane, it is more effective in breaking the barking habit than conventional shock collars.