The part was for 10 days of continuous use. I found it good in itself. It's easy and of course really nice quiet and well misted. The items you have to put together a little careful if you even know how that's no problem. As far as we were satisfied. After 10 days of continuous use with 2 children and 1 adult contacts have somehow eased. That part did only when it expresses with finger up. I have it therefore returned and brought me one of Inqua. The louder, but few days running now reliably and looks even more robust.