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.
Unit worked for 8 months and has quit working. Was used irregularly and without high demand, used on Sundays and Wednesdays for church. Sold by Amazon, but no further support available now that I try to get help.