This is the HEPA filter face mask with a built-in, two-speed micro electric fan that provides 6X the airflow of a typical mask. Ideal for unencumbered wear—even while exercising—the mask uses a HEPA 13 filter that traps up to 99.97% of airborne particles 0.3 microns or larger, such as dust and allergens. A backing charcoal filter removes odors. It has a silicone face seal and adjustable ear loops for comfortable wear. Replaceable filter lasts for up to 30 days. Fan’s built-in battery provides up to 10 hours of use from a charge via USB. Includes interchangeable white and green face plates.