I bought 2, one turned out to be rubbish on the first day, the other one couldn't understand what I was saying, it was like speaking gibberish. In the second one, after a week, it started having problems too, it doesn't have a sponge on the microphone and absorbs any kind of sound. Don't buy them, I only bought them for the car case but it's really a waste of money.

Buy them only if you feel like dealing with the store for refunds and replacements.