With the Dyson Pure Cool Link, automatically remove 99.97 percent of allergens and pollutants as small as 0.3 microns from your home, including pollen, bacteria and pet dander. Wrapped with a vacuum-sealed Glass HEPA filter, a layer of activated carbon granules captures odors and harmful toxins for purification all year round. In the summer, smooth, long-range air flow keeps you cool. This intelligent device automatically monitors, reacts and purifies then reports to your Dyson Link app, allowing you to remotely control your environment. Night-time auto mode monitors, reacts and purifies, but only using the quietest settings. LED display dims for no disturbance. 7 1/2"W x 4 3/10"D x 40 1/10"H.