Ultraviolet sterilization: Air purifiers can irradiate microorganisms (bacteria, bacteria, etc.), disrupt the function of nucleic acids, cause the death of microorganisms, and achieve the purpose of disinfection. It can effectively purify a room of 10-25m. Does not use UV rays to irradiate the skin High-efficiency HEPA filter: HEPA-grade filter and high-efficiency activated carbon filter work together perfectly: filter 99.97% of dust, pollen, smoke, odor, bacteria, PM 2.5, particles, mites, mold spores and pet dander Filter to 0.3 micron. Ozone-free. 3 types of lights: Our air purifier will automatically detect the air quality within 3 minutes of turning it on: a red light means the air quality is too poor, a yellow light means the air quality is average, and a green light means the air quality indicator light is on, which means the air quality is good. Silent air purifier: 360-degree air inlet and outlet, silent air duct design, the lowest noise in the filtered air is only 35 decibels. Create a completely calm and relaxing environment for you to sleep peacefully without interruption. Portable design: The air purifier weighs 200G, is very small and lightweight, and is ideal for cars, corridors, study rooms, bedrooms, offices, kitchens, etc. Through the USB cable, you can use an adapter (USB interface), laptop or mobile power supply to charge.