I suggest you go to YouTube and watch some videos before you purchase .
I will not rate this product until I use it but I suggest you go watch a YouTube video before purchasing any of these Jaw exercisers. Not seen a video on this product I was not sure how to use it.<br />I will try to make a review on this item after I use it for a few weeks and see the results .<br />I will give it a two star rating only because it did not have a video to go with it .
Rating: 2 stars