The UV-Sensitive Fans
The UV-Sensitive fans are a little more interesting. The term UV-Sensitive actually means UV reactive. So, you'll need a UV CCFL (Cold Cathode Fluorescent Light) to 'light up' this fan! :)
Ouch! Sleeve bearing fan?
Personally, I can accept single ball bearing fans but I think sleeve bearing fans are a little too much! While sleeve bearing fans may be a quieter solution, their life expectancy is rather short and they are not as reliable as the ball bearing fans.
As for the other specifications, they are pretty much standard 80mm specs. Nothing much to talk about.