They do what they're supposed to!
Crutchfield Customer Review (What's this?)
Many have said that these headphones are uncomfortable and that they are flimsy. I find them to be somewhat less comfortable than many over-the-ear phones, but I think that's more a function of their being on-the-ear phones. As far as flimsy--- No, but they are NOT built for careless handling by people who want to toss them around with their portable players. What they are is excellent sounding phones for listening to excellent recordings--- Mercedes sound for a Kia price. No, they're not for kids. But they are wonderful for music lovers who like to sit quietly and enjoy what they're listening to--- for not very much money at all.
Pros: Wonderful sound quality
Cons: None-- within the context for which they were designed for.