O.H.
I had the one done at home. It was basically a mask that was computerized and talked to me. lol It was not easy to get through the night. The voice woke me up saying my nose hose thingy was off and I needed to replace it and that my mask had moved out of place. It came back that I was low enough to not get it so I didn't. My husband needs one. I know several people who use them. None of them *like* the mask but they say when they do use it, they sleep way better. Good luck.