This is a new generation of Car air purifier, completely different from the traditional one which has been commonly used. This new car air purifier applied with the most updated technology: Nanometer wave-net purifying, and also combined with Digital Signal Processing, bring a perfect microscopic security concept to Car Air Purifier market. In order to meet high level requirement of car owners, we add MP3 playing function to our Car air purifier which is carried out by FM with USB memory. Specification 1. Power Supply: Car use power supply (DC 12V) 2. Consumption: 3W 3. External Memory Interface: USB 4. Transmitting frequency: Frequency optional 5. Signal processing: DSP 6. Size: 66(Diameter) × 156(Height) mm 7. Installation: The place where soft drink can be put or use our standard rack to place it.