New in box unused Ultra quiet High-efficiency filtration system: 1 air changes per hour in 1076ft², 6 air changes per hour in 215ft².High CADR index that gives you fresh air in 10 minutes. 3 stage filtration: Removes 99.97% of dust, pollen, smoke, odor, and pet dander,Which filters airborne particles as small as 0.3 microns. 16W rated power, uses little energy even when being used 24 hours a day New Technology Child Lock To avoid error operations efficiently caused by pets or children out of curiosity. Smart Settings With touch screen display panel, It has 4 Speed Settings (Sleep/Low/Med/High) and 1/2/4/8H Timer settings,which fits your different purification needs and size of the room. Filter Change Reminder Fan speed indicator flashes when the filter replacement is needed Dimension: 7.1 x 7.1 x 11.1 inches Voltage: AC 100 V-240 V / 50-60 HZ Color: White MSRP $169.99