Summary: Well, I guess that I expected something a cut above what brands other than Sony are peddling for $13. I was wrong. These are just as good -- meaning, just as *bad* -- as other headphones for the price. The best thing about the phones is the colored cord and colored buds. No one else will be impressed, except for pre-teen kids, but I think they're cool looking. Other than the colors, there's not much to recommend about these. The sound quality is atrocious.
Summary: I had a pair of Sony MDR-EX51LP earbud that I bought in 2006 - they gave up the ghost 3 weeks ago (after 3 cross country moves, using them everyday on my commute, and overall general misuse), I bought these to replace them. Waste of money, completely. I have no sound from my right ear, after three weeks. I love the fit of the Sony earbuds, they are the only thing I have ever found comfortable, but take my advice and buy a more expensive pair.
Summary: I bought these in violet TWO MONTHS ago and already one of the ear's sound stopped working. I take good care of my ear buds and don't tug, pull, or mishandle them. I called Sony's customer service to log a complaint (since I could not find an email for ear buds on their web site) and was even more disappointed. The rep told me these were "out of warranty" and I would have to pay for servicing.
Summary: I always need a set of earbuds to use outside my house, as I don't like carrying around my gigantic over the ear headphones everywhere. These served that purpose well, sound pretty good, but have the worst durability of any headphones I've owned. First, the sound; I can barely hear any of the midrange and high frequencies. Listening to rock, the bass overpowers the guitars, vocals, and drums.
Pros: Comfortable, Compact, Good Bass, Lightweight, Stylish