Supplied fresh air respirator system is equipped with portable power sources mainly overcome the problems of big air in-taking resistance, difficulties in breathing, and so on. Unique electronic ventilation design system, to keep the fresh air flowing through your nose and mouth, suitable for long time use. With filter function, 99.9% filter effect with Japan H13 high quality material filters. You can connect the electric air filter to anywhere you want and then optionally tie to arms, neck, waist, and head. PERSONAL AIR FILTER HEPA New In Box. Condition is "New". 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: 2 Portable 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.