Wathai 2PCS 50mm x 15mm 5V USB Blower Fan 5015 Brushless Cooling Fans

Great for cosplay helmets. I took a helmet to a renn faire a few weeks ago and could NOT keep it on without terribly overheating. Was looking for a way to keep the helmet on for the whole time. Wiring was easy enough, bit long on the cables, but all you need are some velcro strips. The adjustment for the fan speeds is great. I can hear and have a conversation with the fans at max speed, but even on the lowest setting, the airflow is decent and barely can hear the fans at all even though it's right next to my ear. Lasted all day in an 80 degree, sunny day at the renn faire, will bring to many more!

Works great. Using to keep power supply and Starlink router cooler on a sailboat. Used for 6+ months between 10-24 hours daily with no issues so far. Pretty quiet on slow and medium speeds

Moves a lot of air for their size. Quite on low setting. Loud on med-high. Grate for keeping amps or electrics cool for best longevity and proformace!

Using these to cool down my receiver- works really well and has a lot of air being pushed even at its lowest setting, but it is a bit louder than I would like.

These were great to cool my little minis forum micro PC. I was getting 180° on my M2 drive before and now it's about 95°

The fans work great in my costumes. The fans kept me nice and cool. I love that the cord is long, so I could put the battery pack, I connected it to, in my pocket.

Does the job for my car amplifier.

They're blower fans, they worked for the project I had in mind. If you need some more directional airflow these will perform the job.

First things first, these things move a LOT of air. I originally purchased the more expensive AC Infinity model and I ended up returning them. These blow more air on the medium level than the AC Infinity unit blows on the highest level. I purchased two for very specific use-cases. One I have attached to a Nighthawk M1 because the thing was constantly overheating which destroys the hardware over time. Even on the lowest setting, the device is now cool to the touch whereas before it was HOT. The second one I purchased to affix to a 12V DC refrigerator to assist in dissipating the expelled heat. In the summer months, these fridges work really hard to combat the ambient temperatures and the internal fridge fan doesn’t move much air. Now I have these things sucking out the hot air which keeps the fridge running smoother and easier.

Perfect, no noise , big enough to cool multiple raspberry pi devices with 5v

This works really well in our RV fridge. It circulates the air from top to bottom and it’s very effective.

this little fan is so cool it usefull at a point i cant live without it! any projects i build i can use this to cool the systems down very fast and it reliable using USB with a spe ed switch 3 speeds on it. Very quiet fan. about 75% less noisy than other same kinda fans

Solid design, quiet operation. Air flow is great. Would buy again.