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.
light wt. and easy to adjust for light intensity. Bummed that it doesn't have a red light feature for night time vision. But for the price it works great. I don't think it is water proof either? Not completely sure?