XIAOMI IMILAB EC4 OUTDOOR SECURITY CAMERA ONLY CMSXJ31A

Mi Air Purifier Filter. It is made in the form of a cylinder with HEPA H13 rating, which means that it neutralizes at least 99.97% of pollutants down to 0.3 microns. The filter stops viruses, bacteria, fungal spores, pollen and mechanical pollutants, including PM2.5 and PM10 (the main components of smog).