What's better than cool air in your room? When it's cool, fresh purified air! This Dyson Purifier Cool uses intelligent sensors to make sure the air in your home is as clean as you'd expect. It diagnoses and reports pollutants in real time, and then shows you the results on the LCD screen. There are 2 layers of purification that trap gases and up to 99.95% of tiny particles as small as 0.1 microns. That's the size of microscopic dust mites. And once they're inside, there's nowhere for them to run thanks to the fully-sealed system which keeps them locked away for good.Good to know- Air Multiplier technology circulates purified air throughout your entire room and pulls in pollutants- With 350° oscillation, you can enjoy clean air wherever you are in the room- Auto Mode does all the work for you - all you need to do is turn the purifier on- Night mode keeps monitoring and purifying, but on the quietest settings and with the display dimmed- The sleep timer turns the purifier off automatically - choose from 1, 2, 4 or 8 hours- Control your Dyson purifier without getting out of your chair using the remote control