2Packs Wathai 30x30x10mm Brushless Turbo Blower Cooling Fan 30mm 12V ¡­

Frankly, if the description were honest these would be a decent little fan for the price. But the description says 29dBA.I bought these for a near silent application and 29dBA is below ambient in my room.At 6 feet away, a meter measures this fan at 53dBA. That's _loud_. The room has two laptops and 5 PCS in it, and this little fan is easily the loudest thing in the room.

Used as a replacement for the failed stock fan in my one year old JGAurora A5S. Fits properly with no issues. Runs quieter than the stock one used to run. Having a 2-pack is a plus. However, the leads are about 3 inches too short. I ended up trimming them, cutting the leads off the old fan (together with the connector), and soldering the wires to those on the new one, with shrink-tubing for the insulation.

These fans move a lot of air for their size, and can get 'loud' near Max speed... but it's a fan... they make noise. I dropped speed to ~1250rpm, and the noise is hardly noticeable, and still provides a great deal of air flow considering how small these things are.

They are a little noisy, but that isn't unexpected for the amount of air being moved by such a small fan. They do an excellent job of cooling.

Using these in a welding helmet to keep the lens from fogging. Smaller than most fans, but overall they seem to be keeping my lens clear.

Fan that works is good but 1 out of 2 isn’t good odds

Not a bad little fan. Good for small projects. When building my project I had wire at the solder point in fan broke. Easy fix if you have the tools. Just need to handle carefully.

I am using one of these to cool a custom setup using a single board computer. Actually running off of 3.3V rather than 5, as I do not need the full air-flow capacity. At this voltage they only draw about 140 mA and are very quiet.