Probably the best sounding cans you can get for 20 bucks, but a little too big for portable use.

these have horrible bass if u want such a thing as bass in your music. i have these and also the cheapo motorola $20-$30 bluetooth headset they have everywhere. one day i was listening to my computer via bluetooth and there was a good amount of bass. since i was at the computer i thought i was listening to these Sennheiser's and was like wow these do have bass after all I guess my settings were wrong. i would definitely avoid these if you like bass at all. they are super light, though.

#2 is correct, bass response on these isn't as good as on some, but mid and high is clearer than many. Consider the application and that you'll need a reasonably current-capable amp driving them at 24 ohms impedance.

These have a very long cord as well, about 10 ft.

Great cans for the $$. Cheaper at Amazon. $17.36.