Patented hemi spheric HEPA type filtration is most efficient at removing allergens and pollutants from the air. Removes PM 2.5 particles, pollutants, dust, smoke, allergens and germs. Photo catalyst filter removes toxic fumes and other VOCs. UV light technology helps reduce airborne germs, bacteria and viruses. Air quality sensor with auto mode. Clean filter indicator light. Ionizer with on\/off button. 24-hour timer with digital controls. Recommended for medium to large sized rooms. Remote control.