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.
Bought this for my six year old nephew, he absolutely loves it. It needs to be charged for a few hours via a USB but will then hold the charge which avoids the need to have it plugged in at night in a child's room. The slides are easy to change. Nice colours.