HEPA-TYPE FILTRATION: Filter helps remove up to 99% of dust, smoke, pollen, odors, mold spores, pet dander, and bacteria from the air passing through it, filtering particles as small as 2 microns and larger to help provide cleaner air for your home or office; uses any Holmes Aer1 Series Filters including Total Air, Allergen Remover, Odor Eliminator and Smoke Grabber, and includes multiple filtersCONVENIENT FEATURES: Choose from 3 cleaning speeds; the low motor setting, advanced blade, and specially designed HEPA-type filter allow for continuous quiet operation without interruption, and the unit also includes a nightlight function, perfect for operating quietly through the nightFILTER MONITOR: Indicates when it's time to charge your filter to maintain maximum performanceMODERN EGG DESIGN: This space-saving air purifier has a stylish design that's suits any room; recommended for rooms up to 150 square feet, and perfect for bedrooms, family rooms, living rooms, or any living space3-YEAR LIMITED WARRANTY: This product comes with a 3-year limited warranty from Holmes