UV Sterilization: The air purifier can irradiate microorganisms (bacteria, bacteria and other bacteria), disrupt the functions of nucleic acids, cause the death of microorganisms and achieve disinfection purposes. And it can effectively purify rooms up to 10-25 m² in size. 【Does not irradiate the skin with ultraviolet light.】 Effective HEPA Filter: The HEPA class filter and high activated carbon filter efficiency work perfectly: filtering 99.97% of dust, pollen, smoke, odor, bacteria, PM 2.5, particles, dust mites, mold spores and pet hair can be filtered down to 0.3 microns. Ozone free. 3 kinds of light: Our air purifier automatically detects the air quality after turning on the device within 3 minutes: a red light indicates that the air quality is too poor, a yellow light indicates that the air quality is average, and a green light indicates that the air quality is good. Quiet air purifier: Air inlet and outlet 360° noiseless air duct design, the lowest and lowest noise level in the