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.
I really hate this. No name brand anywhere. I wanted to take a hammer to it the first day I got it. Very hard to navigate. Just sitting on a shelf as an EMERGENCY back up. PLEASE don't buy, you are just wasting your money.