We received the whole body vibrator two days ago, and as somebody else said, it's heavy (60 lb +/-) so we had to wait until yesterday until someone could help us take it out of the box. After reviewing the simple instructions a couple times, we set about assembling it. The instructions were clear, necessary tools were included and the best thing is that the screws and washers were installed in the proper places, so it was a simple project to take them out, assemble the pieces (one at a time, of course) and reinstall the screws and washer. Everything lined up easily, it would be hard to make a mistake unless you took out all the screws at the same time instead of only what was necessary to install the next piece.Following the illustrated instructions was a simple process. We were thankful for the thoughtful and detailed engineering.Once assembled, it was easy to ROLL it into the location we wanted, plug it in and try it out. (And I'm a senior female with a bad back and I can do it with minimal effort.) It's a sturdy piece of equipment, and it is very VERY quiet. The instructions are easy to follow. It has three basic programs of various times and speeds and another option you can program time and speed to your specifications plus it has the ability to measure your BMI which I haven't tried.. The platform moves a fraction of an inch in a sort of side to side/up and down motion which works your whole body. The manual includes various exercise options. It did not feel like our bodies were getting a "workout" while on the machine, but later you could tell that yes, indeed, everything felt looser and warmer like it does it you are running or walking any distance. Some people have commented that they had a rash afterward. I experienced that, too, but by the next morning it was gone. I believe it is from the motion which you hardly feel while on the equipment, but your body "gets it."We had one small glitch with the controls, but when I talked to the seller's customer service rep he was very kind and was able to resolve the issue immediately.I haven't rated "pain relief" because we haven't had it long enough to be able to answer, mostly because neither my husband nor I have a lot of pain. We bought this mostly for the convenience of being able to exercise at home no matter the weather, and for strengthening our bones. So far, I am very happy with this purchase.