Air purifier true HEPA filter air cleaner air quality sensor P20
With a large expansion area and a longer lifespan than others, the 3-in-1 P20 HEPA Filter works with ultra-fine Pre-filter and activated carbon filter, trapping 99. 97% of pollutants such as dust, smoke, and other particles/allergens are as small as 0. 3 microns.
At the same time, the noise level is nearly voiceless with only 30db without disturbing your sleep.