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.
The product itself works great, but one of them arrived really cracked. The first time I ordered, both were cracked. I don't want to go through the hassle of returning again so I'll just use the one that I have.