[Clearance] YSM Electric Anti Bark Collar Shock Control Dog No Bark Collar with 7 Levels Button Adjustable Sensitivity Control, Stimulation of No Harm Warning Beep and shock, for 15-120 Pounds Dogs Safety comes first. High quality Electronic Anti-Bark Dog Collar and sends harmless warning sound and shock to the dog when it barks.The stimulations repeat through 7 correction levels, the intensity gradually increases until the dog stops for 30 seconds. If the continuous stimulus reaches the 7 levels, then the Collar will stop working for 1 minutes to protect the dog Adopted with improved anti-bark chips which will be safter, effective and easy to use. Stops unwanted barking with progressively increasing warning sounds and harmless static stimulus. 7 sensitivity levels (1-7) adjustable for the different size of dogs barking and specific environments through the "+" /"-" button Light Weight receiver, Unique bark terminator, Replaceable 6-volt Battery and Low battery consumption, Effective on a 15-120pounds dog You are not suggested to use it for puppy, especially below 8 lbs, if you really want to try, take care. If the dog is too small, you must use it under the guidance of the master to avoid unnecessary harm to your dog, because the stimulation for the puppy will be a little strong