Review title is Very Small but nice [SEP] This is a small oil diffuser than others I have seen or used but it is very nice and looks better in person than in pictures. The light design is nice but too much for me when I’m sleeping. You have to turn off the whole thing to turn the lights off. You can turn on the diffuser without lights but once on I can only get them off by turning off the diffuser. It lasts almost through the night maybe 6 hours? I find taking off the ceramic cover easier than covers of other diffusers. I use this for just my bedroom so it is perfect. I did not come with a measuring cup for water, this is unusual but I had an extra so no big deal.