car air purifier adopts a 3-stage filtration system. High-efficiency filter layers remove 99.9% of harmful gaseous substances such as car exhaust fumes, chemicals emitted by plastic materials, and other odor-emitting substances (volatile organic compounds (VOCs), toluene, and formaldehyde are even more down to 0.1 microns in size 【Energy Saving & High Efficiency & Silent Operation】:Small volume and high-performance fan, with speed up to 5300 RPM, only 4W power, and up to 60000 hours of service life. It only takes 6 minutes to filter at a time, purifying up to 10 times in 1 hour, operating virtually silently 【Smart & Feel The Air Change】:To ensure that you focus on driving, our car purifier turns on and off automatically with your car engine ignition. You can adjust the 3-speed fan filter by touching the power button.Our vehicle air purifier has built-in PM2.5 sensors, so you can accurately see the air quality in your favorite car. 【Easy to install】:car air cleaner design, adopts a surface treatment covered with high-grade cloth and multiple colors, making the product simple, stylish, and versatile. Weighing under 1 lb, the 3M long original power cord can let you choose more installation locations in your loved car. 【Safe and Reliable】: Ozone Free Air Purifier. Meets California Air Resources Board (CARB) certification requirements for indoor cleaning equipment, ETL certified. We promise to provide all air purifiers with lifetime technical support