Home Desktop Air Purifier with 3 Stage Filtration System: Pre-Filter, True HEPA Filter and Activated Carbon Filter. Effectively eliminates 99.97% of airborne pollutants like pet dander, dust, household odors, cigarette smoke, wildfire smoke, pollen, allergens and particles as small as 0.3 microns..Quiet with One-Button Operation: Simply press the power button to adjust the fan speed to your preference. Choose from high, medium, or low fan speed, or select sleep mode to set the device on the quietest setting (37 dB)..Compact Size but Powerful Purification Performance: Use in your bedrooms, office, children s room, pet s room, and other small to medium-size spaces..Filter Replacement Indicator: Convenient filter replacement light flashes when it s time to replace the filter (about every 6 months). Search for: RP-AP068 Filter to purchase..Quality Assured: Designed in California with no UV-C or harmful ozone. Intertek ETL-Certified, CARB (California Air Resources Board) certified for sale in California, 1-year buyer assurance with lifetime support, and local U.S.-based customer service office.