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 would like to bring to your notice that the watch stops working frequently. I don't have any problem with the watch but it doesn't work properly as expected. May be the battery is old and has exhausted. I would be glad to get a solution for this problem. Thanks.