Ultramasx UltraOne is a respirator with a built-in active 2-speed turbofan and equipped with removable HEPA and ultra-fine activated carbon filters with rating KN100/N100/FFP3 equivalent. Re-chargeable via USB and re-usable hundreds of times. U.S. FDA registered, CE and RoHS certified. UltraProtection: State of the art 4-stage HEPA and activated carbon filter membranes filtering more than 99.97% of PM0.3. In our last edition, we have also added an exhaust air filter to protect those around you. UltraVentilation: Active 2-speed electric turbofan provides up to 6.9 cubic meters of purified fresh air per hour. Excellent for everyday use or even for sports activities, especially in warm and humid climates. UltraComfortable: No more vapor fogging your glasses. Soft medical-grade silicone face seal for a perfect fit. Thin straps with limited contact on your face skin and wearable either behind the head or behind the ears. UltraSustainable: Re-chargeable via USB and re-usable with our Ultramasx UltraFilters�¢?�¢ cartridges. The mask lasts years, just changing the filters, minimizing environmental impact. Every box includes one Ultramasx UltraOneTM respirator mask, two pairs of silicone straps, two fitting clamps, two Ultramasx UltraFiltersTM, two exhaust air filters, one USB cable, and a travel pouch.