Features: -High quality:This desktop fan uses a high-efficiency motor, which runs smoothly, reduces friction, saves electricity and is durable; 5 streamlined blades effectively reduce wind resistance and reduce noise; a sturdy frame and a small gap design prevent the blades from rotating Injury to your fingers by accident is more secure and becomes a must-have at home.  -Stepless speed change:stable base, the base is equipped with non-slip device, the knob controls the wind speed, and the 180-degree rotation of the button changes the wind speed smoothly, which can give you 180 experiences and let you choose the wind speed that suits you.  -Highly compatible USB power supply:Use USB charging, compatible with PC / laptop, mobile power, USB power strip, car charger and other USB power supply, so you can always enjoy the coolness indoors and outdoors.    Specification: Power supply:USB port;  Material:Plastic;  Motor:Copper motor;  Type:Desk Fan;  Colour:Black/White;  Power Source:Electric;    Features USB Powered,180°Rotation;    Package included: 1 x USB Desktop Car Fan