Received and tested it, here is a small review:
Sound clarity and volume could be better, didnt check battery time yet. The only main issue is that the mic isnt at the bottom, its a bit in the center and the other person hears his voice echoing back. This could have been fixed by placing the mic in the right place at the bottom and covering it a bit.
Anyway, for the low price i guess some drawback is to be expected. Here are the pictures so you can see what i'm talking about: