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.
I ordered my speaker on a Friday and it was delivered on the following Monday. The device is plug and play and it worked beautifully on my first call. It also only picked up my voice even though I had the fan blowing behind me.