[Multifunctional] Cooling, Ventilation to keep interior air clean, Lengthen Lifespan of the inner electrical components of cars. Use solar power, reducing on traditional power sources and saving energy costs. [High-Efficiency Performance] The high-efficiency design of this fan provides powerful ventilation, improving air circulation and preventing heat buildup in your car.When using Polycrystalline solar panels, no power supply is required to charge the battery. [Easy to Install] Hang the exhaust fan vent on the auto door glass, avoid leaving space in the window. With a simple installation process, you can easily attach this fan to the window or roof of your car without any complicated wiring or tools required. [Comfortable Driving Experience] Maintains comfortable temperature level for your return. No longer feel hot when you enter the car.Fresh air is drawn in as hot, stale air vents out. It can be used continuously on . Product Name:Car Exhaust Fan Product type:Car mounted fan Usage:Exhaust heat dissipation/air circulation Power:2.5W (W) Tips:The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don' mind. And take a consideration before place the order if you have request for color or appearance. Colour:A:Black Material:ABS Package Contents: 1 set x Car Exhaust Fan(Solar+USB Charging) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.