Cleans the air by filtering through the water. Bad air is sucked through the water and then releases the water-filtered air back into the open. Use this with your favorite essential oil flavor by dropping a drop or two into the water. This is a very good size that can be set anywhere around the house. This unit does not come with any essential oil or fragrance. It includes power plug to AC wall outlet. It has one multi-color LED light. The LED can be turned on or off. It can be turned on by itself or can be turned on with the LED light. Removes smoke odors, dust, and bacteria. Extreme low noise Great for use with essential oil for aroma therapy Great for people with allergies Comes in brown wood grain color top.