Xiaomi Smart Air Purifier 4 Compact 27 m² 60 dB 27 W WhiteSmall but powerful Compact size and small footprint, suitable for home wide Dual use desktop and floor standing design, compact and easy to move. Powerful performance and a steady output of clean air. Bedroom Fresh air eliminates exhaustion Child's Bedroom Protect the respiratory health of children and infants Workspace Operate quietly, doubling your efficiency Traps 99. 97% of particles as small as 0. 3 microns 3 in 1 filtration for thorough