Functionality confirmed. Pre-filter disinfected and cleaned. Dust collection filter disinfected and cleaned. Includes instruction manual. Humidifier has never been used. DAS-303E Features and Functions Triple Deodorization Equipped with a high-speed mega filter III. Decomposes and deodorizes strong odors. Dust Collection Function Catches pet hair and pollen floating in the room. PM2.5 (Note 1) High-performance dust collection filter (sold separately) can also be replaced. Clean Humidification Employs evaporative humidification that suppresses the release of impurities and uses less electricity. Protects your room and skin from dryness with clean moisture at all times. Twin Disinfection Fujitsu General's unique twin disinfection, combining release and suction, disinfects both airborne bacteria (Note 2) and attached bacteria (Note 3)! No Filter Replacement Needed The deodorizing power is restored, and the deodorizing filter does not need to be replaced (Note 4) thanks to the filter auto-clean function.