Summary: I have been through several sets of earphones in my life and I will say that for the money these have really good sound. They fit comfortably in the ear and they do block most of the external noise. My only real grip is that they should put the plug at a 90 degree angle so it doesn't stick straight out in harms way. I use it on a Creative Zen player and I would think it would be obvious to the same maker that it should be thus.
Summary: These are solid headphones that work with the Generation 1 iPhone. They block 90% of background noise. My only complaint is that what I use them outside jogging or roller blading they block the noise so well that I can hear the vibrations of my feet hitting the ground.