Silent Car USB Fan Rotation Dual-Head Car Headrest Cooling Fans Energy-Efficient 3-Speed Strong Wind Brushless Fan Features: 1. Uses three gear adjustment. Three-speed wind cycle brings coolness and comfortable. 2. This USB charging auto headrest fan come with a rotatable fan base. It can multi-angle rotation. 3. This electric car cooling fan provide strong wind to cool down the rear passenger with 2 rotatable fan head, perfect for keeping the rear passenger cool and comfortable; 4. This auto rear fan can be easily installed manually without any additional tools. you need to do is tighten the bottom swivels nut, pluggings it into a USB power outlet 5. This car powerful cooling fan have a USB power interfaces. It is used in car model, including car, SUVs, commercial vehicles, trucks, buses, excavators and cranes, etc. Specification: Product name: Car cooling fan Input: 5V/2A Wind speed: 3-speed adjustable Installation: On headrest rod Features: Silent, energy-efficient, strong wind Functions: 360-degree rotation Package: 1pc