I'm sorry for other reviewers who seem unhappy with their purchase, it's always disappointing. I just received mine 5 minutes ago and tested it right away and it seems really great. It has 3 volume levels and the loudest is not as loud as I feared in some reviews. Let's see how it works in a class. It's SO EASY to use. You press the tooth button or the hand button and it plays music and flashes light for 20 seconds or 2 minutes depending on the task. As you near the completion of your task, the light will flash rapidly as a visual indicator. With Covid telling us all to wash our hands for the full 20 seconds each time I can't imagine how difficult it will be to keep my kids safe and at $15 this purchase seems more than worth it because I don't want to spend all day in the bathroom and help kids count to 20 over and over again. I'm so happy I found a solution to this problem and someone has already done exactly what I had in mind! My purchase was from LUXSWAY in case it helps potential buyers.
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