I was quite surprised when I opened this package to find that this diffuser has to be run off of something with a USB port. I guess I could buy an adapter, but the cord is way too short to reach from where I wanted to put the diffuser to where the plug is. I purchased this diffuser for use in a meditation room that is in the process of being built. I admit I did not open the package as soon as it arrived. Unfortunately, by the time I opened the package and realized I can not just plug it into the wall, it was too late to be returned. Maybe my fault for not thoroughly researching how the plug works, but I have 4 diffusers in my home and NOT ONE of them has to have a USB port to work. VERY disappointed that this was a wasted purchase and I am out $25.00.
Fun! And cool. Great gift for my daughter. Only wish it lasted longer than 4 hours. Should make them bigger to hold more water. For those wondering, the light is optional.... can be turned off while still providing mist.
Got it today and was excited to use it. It didn't work. It didn't even come with a USB cord. I think it was previously used and returned, there seemed to be some oil residue when I finally took a good look at it.