Dyson's most powerful small-format purifier. Powerful yet compact for minimal disturbance. Whole machine fully sealed to trap allergens and pollutants. 360-Degree Electrostatic filter captures 99.97% pollutants as small as 0.3 microns. 360-Degree Activated Carbon filter removes pet and cooking odors or even NO2. Delivers pure air at just 24 dB in Sleep Mode. MyDyson app - control and monitor air quality from anywhere. 5-Year filter life.