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.
Band size was fine since I ordered up but the wire was extremely uncomfortable. I ended up with a bruise in my left armpit area where one of the wires poked me and a bruise in the center part of my chest where both wires meet. Could not stand the pain!