removable filter. 33.7 dB of low noise for a restful night's sleep Mi Home / Xiaomi Home App + AI Voice Smart Control PM2.5. Smart dust with high precision. Multipurpose filters: Eliminate household odors with 99.97% filtration of 0.3 micrometer particles. The Xiaomi 4 Pro smart air purifier can produce 8,330 liters of clean air per minute and has a CADR of up to 500 m3/h. Every area of your house is filled with clean air, allowing you and your family to always breathe in a healthy environment. Fresh air that is visible and fully monitored and visualized in real time. Dual motion laser sensor for PM2.5 and PM10 focused cleaning that prevents dirt from escaping. thorough tracking of air quality variations for more focused and effective cleaning. When in automatic mode,