This machine is great. I was a bit concerned about buying from China but Elisa has been marvelous the entire way. No matter what time of day I contact her she responds & no matter how silly my question may have seemed to her she was never impatient. I would highly recommend NUBWAY machines & Elisa who is one of their saleswomen & technical advisors. The online training was ok. I fely Gracie tried her best but the language barrier meant a lot of time was wasted in trying to get her to understand my questions. Everything was sorted in the end though & my clients are very happy. I would recommend getting the 3D head plus the VMax head as both heads together give a far better result than just one of them on their own. It is definately a very powerful machine because I've had one of my clients have a treatment on a different HIFU from another salon over a year ago & when she had a treatment on my machine she was very surprised how much more powerful it was & how better her results were.