I suffer from allergies every spring season, so I was so anxious to try the Shark HP102 Air Purifer, and it did not disappoint!  The product comes with a Quick Start Guide with instructions for use, the filter is included, and it plugs into a standard outlet.  I noticed right away after start up how the compact unit improved the quality of the air in my home. The air purifier displays the air quality and auto-adjusts the fan speed to increase or decrease to maintain the quality of the air, removing smoke, dust, pet dander and also removes airborne droplets that can carry viruses (very necessary for all of us). One added feature is how quietly the unit runs, so I can use it in any room in my house. I will definitely be recommending this air purifier to others.