Review (3/5): Too early to tell but..
I wasn't excited about the fact that the mask has to been plugged in in order to use it. I had another mask that was rechargeable. This mask is extremely heavy and kind of uncomfortable. This is my first time using it so it's hard to say whether it works or not. I plan to use it in order to see whether it does what it claims. I'm also contemplating sending it back because of how heavy/uncomfortable it is.