Sensors analyze air and checks data every second. HEPA filter captures 99.97% of particles 0.3 microns in size. Additional filter removes odors and gases including VOCs. Continuously traps and breaks down formaldehyde molecules. Air Multiplier technology. MyDyson app - control and monitor from anywhere. Compatible with Alexa Siri and Google Home. Fully sealed HEPA H13 standard machine. Oscillates up to 350-degrees. Night mode. Parent Tested Parent Approved. Certified by the Asthma and Allergy Foundation of America.