I was really excited about this diffuser but cannot deny that I was disappointed by the small output of vapor. I could barely smell the essential oil I had put in it. I had tried the same essential oil with another diffused and the fragrance was everywhere. The lights are pretty but the diffuser barely does what it is supposed to do. Finally, it comes with a USB cable only and will not plug into a regular wall socket (unless you have an extra piece around the house). Definitely overpriced!