The Sharp KC860U is an air humidifier with unique air treating features to maintain a clean atmosphere in your home. This Sharp air purifier has an HEPA filter to hold 99.97% of microscopic size that pass through it. This can prevent pollen, mold, and dust from contaminating the air. Additionally this air humidifier has an antimicrobial layer that helps to protect against viruses. The Sharp Air Purifier has a clean indicator that indicates the specific amount of impurities present in the air. This helps the user to understand how much clean air is getting circulated in the house. The Sharp KC860U is easy to operate with Instant-On buttons for every mode such as Clean Air, Clean Air & Humidify and Quick Clean mode.