Overview: 1. Usage: Powered by USB cable, connected with the charger or computer. Press the touch switch to change the fan speed and power ON/OFF. 2. Automotive Clean: Start the car and the air purifier will operate automatically. There are two modes for your selection, high speed and low speed. 3. Portable Design: Air purifier Size: Dia 6 * H 1.5 inch, Mini and space-saving, compact and portable for your convenience. 4. The car air purifier with True HEPA(High-Efficiency Particulate Air Filter), a three-stage filtering process that eliminates up to 99% of harmful gases, smoke, bacteria, odors, dust, pollen, pet hair, and other particles from the vehicle. Specifications: Rated voltage: DC5V Rated power: 2W Product name: Cup-shaped car purifier Filter size: 59*19.5mm Product size: 72*72* 145mm Product weight: 0.5kg Applicable models: GM Negative ion concentration: 4-8 million Suggested use area: 8-20 (㎡) Package Content: 1 x Smart Car Air Purifier