This unit is much bigger than I expected especially being labeled as a mini and somewhat on the louder side, but definitely works.  I am impressed with the 3 levels of colored lights to let you know what your air quality is. The first day I plugged it in, the level reading showed moderate, by day two of using it showed good.  Comes with a true HEPA Filter for air purification for rooms up to 217 square feet and reduces odors. Equipped with Auto mode function which sets fan speed setting based on the rooms real-time air quality. Very well made and great quality, all in all I'm very satisfied with this unit.