This is my first large capacity difuser yet. I was shocked at how long it runs. When I took it out of the box, I noticed it was almost like a basketball with the top cut off. Only with wood grain. The color changing lights inside are relaxing and you can use your essential oils inside it just like you would a regu.ar defusser. The one difference it this runs almost all day, rather than stopping after an hour. Ive had this running nonstop for about 2 weeks and Ive have nothing to be unhappy ablout.