The patented nano-reactor that sits inside of Luft Qi contains a high-quality brushless fan. The same fan is used for computer servers, so it is 100% safe to keep it running for 24 hours. Both the LED and fan last more than 40,000 hours - that’s more than 4.5 years. No larger than a soda can, Luft Qi weighs less than 6 ounces, so it’s easy to keep it with you wherever you go. The compact size fits conveniently in your car’s cup holders and can be powered directly through the power outlet. Since Luft Qi needs no filters, you will not only save hundreds of dollar on filters but also save the earth. In addition, Luft Qi’s technology DOES NOT produce ozone, which is the byproduct of most ionizers or electrostatic air purifiers using UV lights.