1) Captures airborne allergens like pollen, smoke, dust, pet dander or any particles as small as 0.1 microns by using 3M Filtrate Electrostatic Particulate Filter. 2) Absorbs smoke, harmful gases (formaldehyde, toluene, carbon monoxide) and other offensive odors by using Charcoal Filter. 3) Generates millions of negatives ions to the flow of clean air. 4) Super quite fan prompts a better airflow without distractive noise. 5) Natural curative aroma beads disperse soothing fragrance to enrich the purified and ionized air. 6) Energy efficient and inexpensive to operate. 7) Power supplied by a USB adaptor in connection with a USB booster. 8) Power input types optional: car lighter adaptor /mains AC adaptor (all not included).