Features: -- Air will be filtered by active carbon to remove odor in the air -- Filtered air will be ionized at a rate of 0.3L/min -- Can be used to cars, vans, sleeping rooms, study rooms and office Specifications: 1) Power: 12V DC(USB) 2) Size: 62mm (dia.) x 88mm (H) 3) Weight: 130g approx. 4) Working environment: -20 ~ 50oC 5) R. H.: 80% 6) Working space: 8 - 27 cube meter 7) Negative ionizer approx. 15,000/cc at 0.3m from unit, approx. 4,000/cc at 2m from unit