1High efficiency HEPA filter with nanoscale filtering effect, using pleated high density HEPA filter, has a larger filter area, effectively removes smoke, PM5 and other unseen pollutants layer by layer protection to achieve deep purification. 2Purification efficiency is increased by 80%. Strong turbines acceleration, powerful rotation and upward force form a powerful centrifugal whirlwind, three speed power is optional, and clean air is raised to every corner of the car. 3Solar panel, light energy charging wireless battery life, Silicon on Insulator panel accounts for 95%, wider heat absorption area, only 27.4mm height does not block the line of sight, thin and light design. 4Inbuilt1200mAh large capacity battery has long battery life, supports solar energy, cigarette lighter, USB power charging, continuous power supply, stable output, and protects the car. 5High speed level 3000r/min Middle speed level 2300r/min Low speed level 1380r/min, suitable for car interior and desktop.