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.
When I plugged in the Speaker with the maximum sound setting on the radio, I could not hear anything through the speaker. I had to insert an AAA battery and amplify it. My previous pillow speaker had no amplification and was much louder. There were no operating instructions with the unit. Also, Amazon advertised free shipping and it they charged $5-6. Altogether an unsatisfactory outcome.