UV Sterilization: The air purifier can irradiate microorganisms (bacteria, bacteria and other bacteria), disrupt nucleic acid functions, cause microorganisms to die, and achieve disinfection purposes. And it can effectively clean rooms up to 10-25 m. Does not use ultraviolet light to irradiate the skin: Efficient HEPA Filter: The HEPA class filter and the high efficiency activated carbon filter work perfectly: the filtering of 99.97% of dust, pollen, smoke, odors, bacteria, PM 2.5, particles, mites, mold spores and pet dander can be filtered down to 0.3 microns. Ozone free. 3 Kinds of Light: our air purifier will automatically detect the air quality after turning on the machine within 3 minutes: a red light indicates that the air quality is too bad, a Yellow light indicates average air quality and green light indicates good air quality. Quiet Air Purifier: 360 air inlet and outlet, duct design quiet air, the lowest and lowest noise level in filtered air is only 35 decibels. Create a completely quiet and relaxing environment, which allows you to sleep peacefully without interference. Portable Design: The weight air purifier is 200G, it is very small and light, perfect for car, hallways, bathrooms studies, bedrooms, offices, kitchens, etc. With a USB cable, you can use an adapter (USB interface), laptop or mobile power to charge.