Car fan, USB 360 rotating clip-on fan for car air circulation, 3-speed air conditioning cooling fan The [stable and 360 adjustable] clip-on fan has a silicone tail behind it to give moderate pressure. It is a simple and effective design that helps to securely fix the car fan to the air conditioning louvres or any sheet over 3mm thick. The fan and tail contain an angle that can be adjusted over a 360 range so that the wind blows in the desired direction and there is a knob to adjust the resistance to loosen or tighten so that you can feel confident and stable and focus on moving forward. [Powerful, low noise] The fan is powered by a high quality, long-life brushless motor that provides strong, constant power to keep the car fan performing well over time. Although it is very powerful, the noise level remains below 50dB, allowing you to enjoy a pleasant and peaceful summer day in your car.