The modern Windmill-Shaped USB Fan is equipped with two different shapes and colors of the fan blades as shown below:
It also includes a small screwdriver, enabling you to DIY different styles of fans. The fan blades are made from an environmentally-safe material, soft and protected. Cute windmill design and soft plastic blades are safe and won’t cause injury. There is only one switch for power on/off. Powered by a computer's USB port or one AA battery.