This air treatment unit/air purifier weighs less than 2 pounds and is portable (3.1"D x 6.7"W x 6.7"H). It can purify spaces up to 65 sq. ft. with an 8 hour-long battery life (batteries not included) and is only 40dB on the lowest setting. This uses the patented NCCO technology that's used in hospitals around the world. It sanitizes your house and kills & removes harmful pollutants, breaking down the harmful particles in the air into harmless compounds and is more effective than a charcoal filter. Air is purified through a three-stage medical-grade filtration process that includes an active oxygen generator, HEPA filter, and patented NCCO reactor. Kills 99.9% of viruses, germs, and indoor air pollution, filtering particles down to 2.5 microns and eradicating allergens. Rigorously third party tested and certified.