So I already have two fans from Jisulife, two versions of the Mini portable fan at 4500 mah and 5000 mah respectively. They were okay for occasional errands or going outdoors.

Lately I have started a teaching job and unfortunately the rooms are very hot. It doesn't help that I am assigned to teach in the afternoon.

I've been using the portable fans I had but I was wondering if I should spring for the Pro S1 ng Jisulife because it has a bigger face, and apparently its more cooling daw?

I wouldn't want anything too noisy tho.

For those who tried, is there a difference or improvement when you upgraded to the Pro 1s? And is there a difference between getting the 3600 and the 5000 version?

Thanks