Size: approx. 4.33 x 5.91 inches/ 11 x 15 cm; Quality Material: the window solar ventilator is mainly made of ABS material, strong and durable, with fine workmanship, not easy to break or fade, and can be reused for a long time Practical Exhaust Function: the vehicle exhaust fan will rotate quickly, draw air from the inside of the car to help cool the inside of the car (but can not reduce the temperature like the air conditioner), with deodorization, fog removal, cooling and other functions, so that your car inside to keep cool and fresh, so that your journey more comfortable Easy to Use: this car window fan is simple to install and requires no other tools; Powered by solar energy, it is simple and lightweight, allowing you to carry it to other places Wide Application: solar powered fan is suitable for the window glass of various cars, and has the function of cooling the air in the car; It takes about 10 minutes to remove gas from the car