Pros: automatic cord reel. one x AAA (1.5volt) battery needed for noise cancelling, which is activated by a small switch. noise cancelling technology appears very effective.

Cons: battery operated. standard plastic construction. somewhat tight fit on the ears.

Pros: Good sound, especially for the price. Pretty good noise-cancelling, though it's really more of a volume boost than anything else. Collapsible, folds down for easy transport, and comes with an extremely nice leather carrying pouch.

Cons: A bit hard on the head, mainly on the top. Cable has worn out after about 2-3 years, warranty I received with it only lasted for one year. This is probably due to the retractable cord being pulled this way and that.

Pros: Sound quality is fine for the average user. They are fairly loud as well. I mp3 palyer used to be at 2/3's volume, and with these I keep it around half volume.

Cons: They aren't very comfortable at all. I wore them for about 4 hours at work and my ears felt completely crushed afterwards. I would prefer headphones that surround your ear instead of sitting on top. The folding part in the middle rubbes against the top of my head and since it's not padded, tends to hurt a bit.

Other Thoughts: I'm not happy with the purchase. I've owed them for a week and just want something better. I've had headphones that don't noise cancel, but surround your ears and fit so comfortably that they block enough noise anyway. Also the noise cancelling doesn't have a good enough range in my opinion. It could block more.

Pros: Pretty good noise canceling. Sound quality is decent.

Cons: Uncomfortable on long flights. Not as portable as they seem.

Other Thoughts: I bought this headphone because I did not want to spend a huge amount on the top brand A headphones. The top of the headset tend to rub the top of my head a bit, and the ear cup could be a little bit bigger. Also, they don't fold to a very compact size.