The Mpow Air Wireless are certainly excellent value for your money. Yes, the sound and microphone are not the best in the market but, for such a low price, it's still a really good deal, especially for wireless heaphones. The good: the wireless range is exceptional and there is no quality loss over all my appartment, plus the frame is really sturdy, all metal.
The bad: the microphone is rather basic and the sound quality is average, with too much bass and an irregular surround (nothing that a decent equalizer can't handle).
The ugly: the frame is a bit too tight and the earset also gets very warm quickly (it's leatherette and if you are sweating easily it won't get pretty).
All in all, still an excellent buy: does the job, solid build and cheap without being cheapy. Recommended.