The GELID Solutions Wing series of gan uses a Nanoflux bearing (NFB), which is better known in the enthusiast community as an electromagnitic fan. By using a magnetic design the fan is able to run friction-free and has no motor noise since no brushes are spinning inside the fan. This means that the fan will never have bearings that break down and begin to squeal as the fan ages over the years.

Article Title: Gelid Solutions Wing 8 UV Case Fan Review
Article URL: http://legitreviews.com/article/891/1/