It's very disappointed it. I just receive it and find there is a missing part. I try to return it but it said Non returnable!!! I just received a few days ago and can return?Don't buy it unless you don't care what you spend.The unit doesn’t work. It shuts off as soon as it is powered on. No returns or replacements on this product. Do not buy.Is not worth itDon’t buyNunca lo pude usar pues no cargabait come with 2 functions and i will love to use the heat one cause it is warm and more smother. but the most important thing is don't forget to put the gel on. this is what i recommend to.It works if you are consistent