I do have numbness and pain in my buttocks. My son bought the Dr. Ho's Pain Therapy System Pro through HSN in the USA. This is a great product because it relieves the pain and the numbness does not bother me that much anymore after using it. And, I like the company's proprietary auto modulating pain relieving waves which other ones do not have.
I just started using the unit over a week ago and so far it works great for me.
Bottom Line: Yes, I would recommend this to a friend