1. GENUINE ORIGINAL FILTER: Please Use '' filter. true HEPA filters are compatible with the HY4866 air purifier. 2.2PCS TRUE HEPA FILTER: filter has four layers of filtration. The honeycomb activated carbon particles provide superior purification and longer life than other activated carbon filters, providing you with long-lasting fresh air. 3.PURIFY A MULTIPLE AIR POLLUTANTS: H13 HEPA filter contains activated carbon particles, which can effectively purify air pollutants such as dust, VOCS, pollen, pet dander hair, odors, and other air pollutants. 4.REPLACEMENT FILTER: To replace the filter simply press and hold the 'FILTER' button for 5 seconds and wait until you hear three beeps to reset the filter indicator. To maintain optimal performance, it is recommended that the filter be replaced every 3-6 months to ensure air purification. Filter life is 2200 hours. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store