Product name: home car air purifier Input voltage: 5V Power supply mode: USB 5V 2100MA Main function: The nano ions released by the purifier absorb, accumulate and negative ions to protect the city and the area from pollution sources such as PM2.5, malodorous us, pollen, odor molecules, and second-hand smoke in the car and indoor air. And the health of your family. The ultra-quiet design of the centrifugal pump is adopted, and there is no noise interference. Using imported chips, super large and strong negative ion release, up to 23 million negative ions. Using USB transmission mode, it can be used in the car, indoors, etc., using drugs, drugs, drugs, drugs, second-hand smoke and other poisonous gases. Negative ions have no secondary pollution or radiation and can be used by babies.