1. Multiple integrated filters can effectively remove pollutants such as formaldehyde, filter smoke dust and PM2.5. 2. High-efficiency centrifugal turbocharger can maximize the output of clean air. 3. The built-in negative ion module can make the ions in the air reach a near-natural state. 4. Smart touch screen, easy to open. 5. Small size, does not take up space, does not block the sight line, and makes driving safer. 6. Parameters: Applicable space: 10-20m2 Material: ABS/GPPS Mute indicator: less than 30 decibels Power supply mode: solar energy/USB/cigarette lighter Rated voltage: DC5V Rated power: 3.5W Dimensions: 158 x 158 x 60mm