Effective Sterilization: the air sterilization machine sterilizes up to 99.99%. Kill bacteria and viruses, remove formaldehyde, eliminate odors, purify the air, etc. The high efficiency filter filters out 99.97% of fine dust particles, pollen, flower dust, dust mites and airborne contamination as small. 360° air intake and exhaust provides healthier, cleaner air at all times. Ozone disinfection: 100mg/h active oxygen output, in As a strong oxidant, ozone can directly invade bacteria and viruses to decompose, instantly destroy organelles and DNA/RNA, and lead to the death of bacteria. Oxygen atoms are generated during decomposition, which is harmless to human body. Negative Ions: Our air purifier generates negative ions, provides you with fresh air and quality, moreover, negative ions can remove viruses in the air, ensuring your health. 4 Intelligent Mode and Quiet Sleep: 4 possible settings provide you with various options, and you can adjust the purification performance depending on