Every way the wind blows. Continuing our legacy of self-developing more effective air pressurization systems, we equipped the Mi Air Purifier 2H with HEPA filters, which are so effective that at least 99.97% of particulate matter of size 0.3m or larger is filtered on the first pass-through. The air becomes so clean that it can help alleviate allergies and asthma symptoms, helping to make beautiful spring days a bit brighter. Features and Benefits True HEPA filtersEliminates 99.97% of particles as small as 0.3 microns. Real-time AQI monitoringAs soon as you power it on, a steady flow of air begins to fill the whole room. Remotely control using Mi Home AppSmart phone controls allow you to adjust air flow rate just the way you like it. High 260 clean air delivery rate (CADR)Featuring a powerful aerodynamic system, it manages to clean 260m³/h while staying ultra-quiet and consuming very little power. Specifications Colour: White Guarantee: 1 year True HEPA filters Remotely