1. Easy Installation: Designed to effortlessly install on the rear headrest, the car rear headrest fan requires no headrest removal. When not in use, it can be rotated and stored without occupying car space. 2. Three-Speed Adjustment: The 5-blade turbine design provides three speed options for the car electric cooling fan, allowing passengers to adjust the airflow as needed for a comfortable ride. 3. Quiet Operation: With a brushless automotive fan design, the fan runs quietly even at high speeds, ensuring a peaceful and comfortable trip. 4. Multi-Joint Rotation Angle: The car seat back cooling fan can be adjusted freely, allowing the wind direction to be customized to personal preference, covering a area. 5. USB Powered: Supports USB power supply for the car neck cooler fan, offering convenience and flexibility by powering through vehicle chargers or portable power . Input Voltage: 5V (USB Plug-In) Input Current: 5V2A Power: less than equal 10W Wind Speed Gear: 3 Gears Control Mode: