Pet Tags Pro-Line No Bark Dog Collar

I did not buy this collar from Amazon. I bought it from my local store and paid almost twice what it's for sale on here for. So of course I wish I had checked here first. But thanks to this collar my dog never barks. I didn't want to shock my dog and the citronella collars are too expensive. I was kinda weary because it is almost 1/3rd the price of the competition. I tried it by barking into it myself and just felt a vibration from the collar. I put it on my border collie and she barked once at my cat and she immediately stopped. She tried a few more times and stopped after the first time. Now I only have to show her the collar if she starts to bark and she stops.