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 on off switch finally wore out. The old one would come on in my pocket (I guess when I sat down or something). This must have been a common complaint because the new one has a new feature. To prevent it from turning on in your pocket, you have the option to press and HOLD the off button for 3 seconds. Then the only way to turn it on is to press and hold the on button for 3 seconds.