Efficient Purification: Air filter consists of pre-filter, HEPA filter, and activated carbon filter, which can effectively purify air pollutants such as smoke, PM 2.5, VOC, pollen, pet dander, etc. Help you improve air quality and care for the respiratory health of your family. PM2.5 Detection: Visualize air quality. VEWIOR air purifiers use the latest technology built-in chip can detect the change of air quality around the air purifier in real time. The lower the value, the better the air quality. 4 Purification Modes: Home air purifier has 1-2-3 gear and sleep mode. The higher the level, the greater the purification wind speed and the faster the purification speed. Sleep mode is very quiet and the display will turn off, so you can enjoy fresh air as you sleep sweetly. Filter Reminder: New function! When the filter has reached the end of its service life, "FILTER" will light up red and remind you that it needs to be replaced. You just need to press and hold t