Name: Car multifunctional seat back fanColor: BlackMaterial: ABS, circuit board, motorScope of application: Suitable for vehicles with headrest rodsFeatures: 3 wind velocity adjustablePower supply interface: Micro USBWorking voltage: 5VWorking circuit: Max 1AWorking power: Maximum 5WUSB cable length: 140cmSingle weight: 275gPackage List1*Fan4*Bracket2*EVA pad11. Strong wind: The USB car fan uses a professional high-performance brushless motor, which has a faster velocity, greater wind and lower noise. 22. Adjustable wind velocity: Our USB car fan has 3 kinds of wind velocity adjustable, which can meet the needs of different environments and temperature changes. 33. Centralized air supply: through the air outlet, the wind can be concentrated on your back and car seat to dissipate heat and cool the back. 44. Easy to install: The car seat cooling fan is small and does not take up any space when installed on the car seat.