To calculate the overall star rating and percentage breakdown by star, we do not 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.
Just today I received Jabra Elite Active 65t Wireless Earbuds. While trying to pair them with my mobile, I see that right earbud never flashes any sort of light (blue/red/green), but only the left one does. Even after trying multiple times and watching videos on Youtube on how people pair it initially, I couldn't get it to pair with my mobile or macbook.