Filtrete Smart Air Purifier offers a smart, tech-savvy air-quality solution. It automatically monitors & cleans your air all day, every day in medium rooms up to 150 square feet. With Wi-Fi connectivity, you can control this air purifier with your smartphone & keep tabs on indoor air quality using the Filtrete Smart App, Amazon Alexa or Google Assistant. It includes True HEPA filtration to attract & capture 99.97 percent of unwanted airborne particles, such as allergens, dust, lint, mold spores, bacteria, viruses & pet dander (as small as 0.3 microns). Air purifier features a filter life indicator to show the percentage left on your filter's life & when you should replace it with an F2 or A2 Filtrete Filter. Air purifier also includes auto mode to clear your air automatically, electronic touch controls & a light dimmer. Its CADR (Clean Air Delivery Rate) is 98.