First of all, these aren't the pinnacle of evolution, and they're certainly not the last of our designs. They're not perfect either. While these can be used as wireless hands-free devices for calls, we're not 100% satisfied with the sound quality of the phone calls. It is "fair enough". So if your main use for the headset is to make calls, then these are not your devices. The sound quality when listening to music is again where we have put our focus. Unlike all the competition, our sound guru Jasse the Magnificent "Audio Bin Superman" has spent months perfecting these earbuds for a uniquely high-fidelity listening experience in this price range. We truly believe that we have earned all the money you paid for these little gems.