Very happy with my purchase. I am very accustomed to make use of such devices, it is my 3rd! And frankly, it's design (if one can say that a medical device.) ... Significantly less expensive than other (professional), but just as powerful and even a little quieter, it has sincerely look like much, but it is much appreciated! In addition, the storage space is very well thought! I have yet to see its capacity of life ..... but anyway, I really recommend it. Price / = 10/10