Breath freely!!! Love fresh air? The lightweight design makes it convenient to move and the compact size doesn't take up space at all. Let it do its work, choose from low, medium, or high fan speed settings. The 3-in-1 air purifier with 3 filtration stages (Pre-filter, HEPA Activated Carbon filter) tackle particles and odors. What Makes it Special? Unique ventilation design system to keep fresh air flowing. Innovative stainless steel wave hole filter with large air volume and small wind resistance. Using Imported Japan H13 high-efficiency filter PM2.5 99.9% filtration. Fan design, maximum air volume, low noise as low as 27DB. ?Easy to Wear? The mini purifier can be trouser pocket, etc. Unique electronic ventilation design system, to keep the fresh air flowing through your nose and mouth, suitable for long time use. ?Battery Life? adjustable wind speed, can be used for 8-10 hours with full charge, larger battery capacity, longer working time. ?Filter Replacement Time?Continuous 500hours working by each filter element ?Air Supply System?Equipped with a mini air purifier to provide air supply, making your breathing more comfortable. Brand New! - Eliminate bacterial viruses and prevent diseases. - Imported Japan H13 HEPA. PM2.5 Filter effect reaches 99.95%. - Unique Ventilation design system to keep fresh air flowing. - Longer lifespan, safer use, cost-effective. - Rechargeable Battery. This Includes: 1 HEPA Air Filter. 1 Charger USB Cable. 2 Masks KN95 2 Connectors 2 Soft tube 1 Sling 1 Elastic Belt Sports Outdoor Exercise: ? Hiking, Walking ? Cycling ? Fitness Exercise ? Other Sports Workshop, Constructions: ? Welders Miners ? Constructions ? Renovation Workers ? Police Patrol ? Postman Drivers ? Renovation Workers ? Police Patrol ? Postman Drivers Indoor, Household, Travel Leisure: ? Household Cleaning ? Teachers Students ? Officers Staff ? Travel ? Securities ? Flying ? Theme Parks Patient Room Clinic: ? Regular Checking Room ? Clinic Nurse ? Dental Room ? Testing Room Contaminants Captured: Allergens, Bacteria, Cough Sneeze Debris, Dust, Industrial Pollution, Mold, Odors, Pet Dander, Pollen, Smog Particles, Tobacco Smoke, Ultra-fine Particles, Virus Carriers, Viruses.