You can press the button repeatedly on the back of the desk fan to switch the mode. Soft wind: 1900 rpm, 2.8m/s; cool wind: 2500 rpm, 3.8 m/s; strong wind: 3400 rpm, 5.3 m/s. 360°Rotation & Stable: The head of this USB fan can rotate 360 degree up and down to provide the wind in any desired direction to quickly cool you down.
