I have had back pain for two weeks. Not anymore, this unit actually works very well. Once you learn what buttons you need to press for the area you need treatment on you are off and running. I could only stand the number 4 setting for the amount of power for the back pain setting. I think it goes to 9. Out of the box the unit looks almost like and iPhone. Very nice looking unit. You get extra pads and a storage bag for everything. For the price you cannot go wrong or at least in my case. It also comes with a chart for acupuncture. Pretty cool.