Operates fine, comes with no instructions so you have to press all of the buttons to work it out for yourself. I don't have a big nose but this closes my nose almost completely so I can't breathe through it while it's on. The AU plug is just an add on to the two pin plug, so it falls out easily. They should just be supplying AU cords as it just plugs into the remote. Will continue to use this one until my new mask arrives, I've bought another one because this one really isn't comfortable. Will update with whether I actually noticed a difference to my skin or not in the meantime.
The remote sound is very loud and uncomfortable