1. Uses three gear adjustment. It can be adjusted for tightness. You can adjust the gear according to the size of the headrest bar
2. This USB charging auto headrest fan come with a rotatable fan base. It can rotatable 360 degrees
3. This electric car cooling fan provide strong wind to cool down the rear passenger with 2 rotatable fan head, for keeping the rear passenger cool and comfortable
4. This auto rear air fan can be easily installed manually without any additional tools. All you need to do is tighten the bottom swivels nut, it into a USB power outlet
5. This car powerful cooling fan have a USB power interfaces. It is used in all car model, including car, commercial vehicles, trucks, buses, excavators and cranes, etc