WARNING: Please make sure the USB power you use has 2A output, otherwise two fans can't work together especially on higher speed! Dual Head and USB Powered--- Designed with 2 fan heads, the car fan can cool down driver and passengers at the same time, the 2 heads are independent to control wind speed and power on/off. The electric fan is powered by an USB cable--5V-2A, 4.59ft, which is compatible with car charger, laptop, power bank, USB socket, etc. Strong Wind and 3 Speed Adjustable--- The vehicle fan has powerful wind that can blow hot air out of your car efficiently, especially for cars dont have A/C, it will also improve ventilation and air circulation, thus eliminating unpleasant smells. It has 3 speed levels to meet different cool needs, press the power button repeatedly to change wind speed. Two Way Rotation and Suitable Size--- The double fan heads is free rotated to bring all-around the coolness, it can rotate 300 angles horizontally and 270 angles vertically-Need Manual Rotation. Size: 29.6x13.8x13.5cm /11.6x5.4x4.3in, the cooling fan will not cause visual blind spots on dashboard and easy to carry around as a desk fan. Leather Design and Easy Installation--- Dashboard fan uses the simulated leather to decorate the base, it looks more delicate and will integrate with the car. It comes with 2x3M tapes, which are installed already, so you can stick the fan to car dashboard or armrest area firmly after peeling off the paper on the tapes. Portable for Wide Application--- The USB fan is suitable for both indoor and outdoor occasions, it can be used for office, desk, bedroom...... and fit to most vehicles, such as SUV, sedan, car, van, truck, RV, ATV or boat. If your car lacks an A/C or sometimes you need to sit in the car in hot summer, this car fan is a great choice to cool you down quickly! Wonvin brand creations and products glow the essence of elegance and luxury.