Energy-saving and Lower DecibelThanks to the advanced brushless motor, the air purifier consumes as little as 4W of electricity. The decibels of the air purifier at night are only 30db.Triple Filtration System With 360° Ring FilterPP filter, mainly used for filtering large particles, hair and so on, HEPA filter can filter the particle pollutants in the air, and can filter the dust, pollen, smoke and animal dander in the air faster, activated carbon fiber layer, effective absorption of smoke odor and other volatile organic compounds, effective degradation of indoor decoration pollution such as formaldehyde, benzene.H13 Filter Element GradeThe grade of the filter element is H13, which can filter particles of 0.3-micron size and strongly absorb PM2.5, PM0.3, and other fine particles.3-Stage FiltrationFront filters, true HEPA filters, and HEPA filters work seamlessly together to eliminate airborne bacteria, dust mites, mold spores, allergens, odors, pet dander, soot.2 speed And Timer SettingsChoose from low or high speeds to cope with any level of air quality, perfect for a normal-sized room or office. Sleep mode runs at the lowest fan speed, breathing and sleeping more easily.