To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Junk! I've used similar types of items like this in the past. I figured I'll go with something different because the price is a lot cheaper. Complete junk does not hold tight it comes loose easy. I recommend you find a different product.