【3 Speeds】The 3-speed USB fan makes it easy to choose the most comfortable speed. Press the button on the back of the small fan to switch between on, low, medium, high, and off. Low - gentle wind as pleasant as a spring breeze (2m/s-1500rpm), which is good for indoor air circulation; Medium - cool wind as if you were in the forest in the early summer morning (2.9m/s-2070rpm); High - strong wind drives away the summer heat (3.7m/s-2616rpm). 【360° Rotation and Stability】The head of this electric fan can be rotated 360° vertically to provide wind in any direction to cool you down quickly. The 4 rubbers designed at the bottom of the mini personal fan help reduce vibration and increase friction, which keeps it more stable and prevents slipping when working even at high speed. 【USB Powered】The powerful fan is powered by a 1.5m USB cable (non-detachable) and can be plugged into any equipment with a USB port, such as a PC/laptop, power bank, USB wall charger (not included), car charger and