Automatically senses,captures and traps pollutants for cleaner air, Detects and 
destroys formaldehyde , Purifies the whole room,Cools you when needed,Projects 
over 77 gallons of air a second for cooling airflow.
Backward airflow mode. Diverts airflow through the back of the machine. To purify, 
without cooling you. engineered to reduce turbulence, so it's 20% quieter than the 
previous model.HEPA Filtration,Intelligent Sensing: Automatically senses and reports 
air quality levels in real-time.Sound level: 61.5 dB, Max. Airflow: 290 l/s,Speed levels: 
10, 81m3