Since I suffer from severe spinal problems I get to be massaged to enjoy again and again. When I found this unit I ordered it tentatively and can only say that there is an absolutely pleasant sensation with a massage with the vibration and the three points in connection. What's not quite open up to me, why the three conditions must be lit blue, in my opinion, unnecessary battery consumption hence only 4 stars. As a recommendation I would you advise a thin t-shirt to start when you are massaged with it, it feels comfortable and slides better.