Small But Powerful:Although it is small but the wind is powerful. Ideal for home, car, office, desktop, camping or travel. Adjustable & Easy to Clean:Small, light and convenient personal fan , the wind direction can be changed as required. Can circulate indoor air and balance room temperature. The rotating fan cover extends the distance of the draft shield. Detachable design, rotate counterclockwise to remove the mesh cover, easy to clean. Infinitely-variable Of Speed Control Knob: Unlike the traditional wind speed adjustment button, this fan adjusts the wind speed through a 180-degree adjustable knob. The wind speed changes smoothly with the rotation of the button. You can choose the most comfortable speed according to your needs.