Wow!

This is a  Great massaging unit. I have had problems with my back especially in my knees as well. It really has helped me especially on my back. It is easy to set up in use, just a matter of minutes. It is a well-made machine and I expect it will last quite some time.  Remember to get the most out of it he will need to download the app onto your phone, just another aspect of this unit that I love is the app. This was definitely worth it for me.