Works well for a pit bull mix and a beagle mix, it’s easily adjustable for each size dog.

I have 3 Shelties. The barking was awful. Bought them each one of these collars & it stopped 2 out of 3 dogs barking immediately. The 3rd is a little tougher but she has definitely improved.

Works very effectively on one dog with no pain or discomfort. Second dog is a bit wiser, would be good to have settings for the bigger stronger dog. Recommend though, it has made a huge difference.

I did not receive the left light that is listed in the description. The collars seem to be working and look as described.

Great product, got 2 the light shock is great and only took a week and now we only use the vibrate to keep the dogs quiet. Battery life is good we didn’t have to charge for almost 2 weeks!

So far so good. Used on 7yo beagle mixes who bark at everything. Instantly stopped barking. It's been a fews days and they've improved even while not wearing the collars.