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.
It is great that the gun is cordless but I don't find it as effective as my previous hand held massager (which was not cordless). This may be because it doesn't have a spiky head, it is not as intense or because the handle is shorter.