This product is definitely for small spaces, as it lists on the box and is accurate.  It has a low feature, which is nice cause you don't hear it running. The High feature is a little bit on the noisier side.  Like that it can be charged and then just run without being plugged in all the time as well.  It also has an off button. 

It is compact in size, so it's fits and small places.

And it works well in small areas like on your desk in your office or maybe a small bathroom.  

In the small area that I used it in, it worked well around my desk, and it made the air around it seem fresh, as there wasn't direct windows by me.

Good unit for small places.