Gives you fresh air in 1 hour: can you imagine it can monitor as fast as a shooting star? And it also gives different air quality tips in time. We use the most practical traffic light three-color method, red light-poor quality, yellow light-fair, green light-very good quality; isn't it very good to understand and identify? When you see the red light, you should leave quickly, and you can breathe the freshest air again in an hour. 360° Air Inlet: With H13 True HEPA technology, it effectively targets airborne particles of 0.1-0.3 microns, similar to all kinds of airborne particles, allergens, cat hair, etc. Enjoy quality air purification.360° air inlet ensures full coverage of your room. Suitable for all kinds of living environments, bedrooms, kitchens, mother's and baby's rooms, removes shoe odor, removes diaper odor. We strongly recommend using original Chuboor replacement filters (search on: B0CCZTZLKM to purchase original filters) INTELLIGENT AUTOMATIC MODE DESIGN: