M 1 poor design, did not generate mist after 5 minutes of use. Really hard to clean, and the mist smelled like plastic as well.Lastly, the humidity % function is absolutely useless.When I use automatically mist adjustment via their smart humidity auto adjust, it always goes up to 60% or more and wouldn't run.Then I switched to the strongest mist, and while it's humidifying the room, the humidity % was dropping from 60 -> 55 -> 40 -> 30 -> 20%. 20% when the humidifer is running. It does not make sense at all.I returned it the item as it was faulty, and poorly made. Don't get fooled by it's cheap price thinking you got a good ideal. What you pay is what you get.