Air Purifier This is a air purifier with HEPA H12 air filter and activated carbon fiber to brock PM2.5 by 99.7%, absorb the VOCs, and Odors. There is 3 levels to control the air flow speed. The device is running more than 7 hours after battery charge. Model: AF-NM-N99 (The application had been accepted for Medical Device Establishment Licence (MEDL) by Health Canada in 2021) Air Purifier HEPA Filter Capturing Airborne Virus-COVID-19 This is a air purifier with HEPA H13 air filter and activated carbon fiber to brock PM2.5 by 99.2%, absorb the VOCs, pollen allergen and Odors. There is 3 levels to control the air flow speed. The device is running 11-15 hours after battery charge. Model AF-NM-N99 Input voltage/currency 1A USB connect Current capacity: 3200maH Purification filter: Silver ion added HEPA filter and activated carbon filter (timed replacement) Filtering efficiency: >99% filter PM2.5 (GB 2626-2019) Bacteriostasis effect: Staphylococcus aureus (ATCC6538) bacteria reduction rate of 99%. The rate of bacterial reduction of e. coli (ATCC25922) is 94.25% (Average). It is antibiosis as well. Air volume: 3-5 m3/h Mute indicator: