I bought it to have it at work during the summer months. It really worth the money, it's from a company that produces cooling systems for computers, not some random company. It really does its job and more, it has an internal battery and recharges with a charger with a type c cable. It has a speed controller. At max speed, it produces excessive air for its size and for the intended use it also makes quite a bit of noise at maximum speed. I put it a little below the middle or in the middle where it doesn't make much noise and doesn't bother you, and it has a satisfactory airflow as needed to have it on your desk. Its battery is good, it lasts about 16 hours, although this depends on the speed you have set. Its construction is very high quality.

The fan is very good. It is durable and powerful. Of course, at higher rpm it makes a little noise but it is tolerable. The only negative thing I can say is that the back side where the air enters is not protected and you can accidentally put your finger inside. In reasonable terms, if you want to transport it you simply hold the base and do it, but for no reason do not leave it with a small child.