Product Dimension: 24x24x33cm Air quality sensor - indicates if air in the room is good or polluted (blue for good, yellow for mildly polluted, red for severely polluted) HEPA11 Filter - can capture at least 99.97% airborne particles as small as 0.3m microns such as dust, pollen, mould spores, and airborne mites. Active Carbon Filter absorbs hazardous substance and bad odors Area coverage: up to 20sqm
