Do not buy from these people. I wish I had read the reviews too. I purchased a diffuser just prior to Christmas. It never ever work properly. When I was first in contact with them they were very friendly and assured me that they would sort the problem. No such luck. I have sent numerous emails and they are just ignoring me. They are happy to take your money but they aren't happy to help out when there's a problem. I would NEVER EVER buy anything from them again. Beware.