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 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