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.
This is an amazing product, my son loves to play with this. The quality is good. It is AA battery operated. Most important thing the range of voice really goes to 100 metres. That is most trusted thing I ever seen.