Cons:Sound like coming in from the inside of an empty Coke can.
I've just wrote an opinion at Amazon regarding these 1-star-only-and-what-a-pity-there-is-no-zero-star-category
These headphones really suck. They have the WORST sound I've ever heard in a pair of headphones with a 16-2000Hz frequency response. Don't EVER buy them. Instead, is better just to throw your money into a river. In both cases you'll be losing money.