GERM-FREE AIR. Swiss Anti -Microbial Technology. IDEAL for bedrooms and small living rooms.DUAL SerenityHEPA filter (F7 Pre-filter/H13 Main-filter). F7 Pre-filter, extends life of H13, takes out large particles and protects the fan. H13 Main filter, 99.95% MPPS (most penetrating particle size, weakest particle size still filters 99.95%).REMOVES Fine particulate matter smaller than 2.5 micron, pollen, house dust, pet dander and hairs, mites, bacteria, cigarette smoke, oil droplets from cooking.CERTIFIED asthma and allergy friendly. Capture and prevent the growth of bacteria, mold, mildew, and odor by 99.9%.SMALL and POWERFUL. Designed to minimize the device footprint while ensuring highly efficient air cleaning capabilities at low noise emission.CONNECTED Our proprietary App offers full insight and control over indoor air quality from anywhere in the world.