Bought as extra fans in the case for summer operation they fitted up easily, quite (I’m deaf any way!) very affordable as I’m not into the RBG that seems the rage for gamer cases.

What can I say, they are fans, they turn, they cool.
Really quite.

These fans have decent airflow for their price, in fact the CFM to price ratio is very good.

However they are extremely noisy at any RPM. Not just in raw dB(A) but produce a mechanical drone. The “Silent Operation” advertised by manufacture is misleading.

Wanted to use this fan as an extra cooling fan in my caravan fridge. It fitted well where I wanted it but the airflow is so weak I can barely feel it and so it does not work for this purpose – sadly.
No problem with fan or the service I received but I have chosen badly for my purpose it seems.