Three Speeds Adjustable: Three wind speeds allow you to choose the comfortable speed on different occasions. You can press the button repeatedly on the back of the desk fan to switch from low, medium, high to off. Low level: 1500 rpm/ 2 m/s, soft and quiet; Medium level: 2070 rpm/ 2.9 m/s, powerful; High level: 2616 rpm/ 3.7 m/s, more powerful.
