Had these for about a week or so, and I can say that they are fine for the price that I payed. Sound quality, comfort and battery life are all around very good.
However I do have a big problem with my pair. Once the battery hits 20%, they make a noise every minute and it does get very frustrating when listening. Not sure if it's just mine, but it makes it so that the battery is only ~7 hours if I don't want the annoyance.
It's a good pair of Bluetooth earphones that are well worth the price.