I made some research on the internet and found out that the sound quality is great (good freq response) and as good as some Shure mics. Obviously, these might not be as durable as higher end mics, nor have the best components/materials, nor be the first choice for an album recording, but for this price how can you complain. Also, if you're gigging you might prefer to use these and keep the expensive ones at home.
Use
Online lessons and home studio applications.
Pros
They come in a case, which keeps them protected and easy to store and carry.
Cons
By now I don't have any, as they have done the job as expected.