Dyson Purifier Removes 99.97% of particles as small as 0.3 microns Fully-sealed airflow and filtration system, so what goes inside, stays inside Air Multiplier technology generates the circulation power to purify the whole room In warmer weather, a powerful stream of purified airflow can cool you down Diverts airflow through the back of the machine, to purify without cooling you Adjustable 350-degree oscillation projects purified air around the whole room Acoustically engineered to reduce turbulence Monitors and purifies using the quietest settings, with a dimmed display Dyson Purifier Cool