LIONWELL Customizable, High-end Air Purifier A168-07with Three-layer Filter, 8-Stage Purification, to remove formaldehyde, dust, smoke and Sterilize 8-stage Purifying: Primary Filter, Formaldehyde filter, Activated carbon filter, Photocatalyst filter, High efficient HEPA filter, Photocatalytic filter, UV sterilization, Lonizer 3-layer, 8-stage purifier, remove allergens, bacterial, dust and smoke effectively PM2.5 digital detection of air pollution degree, the United States imported G1 dust sensor Leakage protect, automatic power-off when it sided down 30, gives you a comfortable and secure living environment Remove Particles 2.5 microns and larger at 99.9% and down to 0.3 microns and greater