I've had this for a few months now, and it does work.  The battery has a long life and the earbuds are fairly comfortable, but the range is not more than a few feet, and the sound quality is only average.  If there is not a clear &#34;line of sight&#34; between my phone and this headset the sound gets crackly and distorted. 

Question: How is the function?
Answer: the sound gets crackly and distorted