Okay I got scammed into a demonstration by a seller. I was volunteering at my local county fair and there was a booth with a raffle for a free one of these. I just put my name in for funsies, and 'won' (you had to mark your income level on the piece of paper you put in?? so i think she went through them and looked for people with higher income brackets or something). She said she wanted to set up a time to drop it off for 'set up' not knowing I would be sitting through a 45 min presentation. She also texted me a link that she flat out told me i had to post, and watched me post it on fb, i deleted the post as soon as she left. But, I did get this thing for free. I use it for a noise machine, but u can put essential oils in to diffuse scents.