Review on 💨 upHere U1204 120mm USB Fan with Adjustable Wind Speeds - Ideal for Computers, PS4, TV Boxes, and AV Cabinets by Stephen Zimmer

Definitely doesn't have double ball bearings. The picture they show is not what is inside at all. This is an ordinary ball bearing, only very small. This is probably why my review was removed as I showed a picture of a tiny ball bearing that didn't match their picture. Just feel the fan. Does it move in a different direction than the rotation? No, that's why it has conventional ball bearings.