It is exactly as described. The air flow has to do with the placement of the fan and the expected slots in the case. I have slight + air flow and everything is cool. The noise is low to moderate.

Very good fan for its price, I bought it for 5 euros. I don't know how well two of these will perform on a PC, but if you don't care about the brand and want something simple, you can buy 3-4 of them to get the job done. I've had it for about two weeks and everything is fine. If any issues arise, I will write about it.

~13/12/2022
I came back after 5 years just to write that this fan still works the same, no joke. It's not the most powerful, but compared to an Aerocool fan I had in the case that broke in fewer years, this one is superior in terms of quality