The headphones you see in the image are called Mico and were created by Neurowear. Apart from being very large headphones, the Mico have something very striking: connect to your iPhone and play songs that have been marked with an app special. What's so special? That reproduction is not random, but depends on our mood.
Do you feel sad? Then surely play some blues Mico. Do you feel full of energy? Then an electronic music will probably hear what. Of course you can change songs if you want, but the idea of these headphones is that they simply listen to your brain when you say what kind of music listening.
Most devices using brain waves do not tend to perform very well in predicting our emotional states, so do not be surprised if these headphones do not either.
Have not yet been released, there are only a few prototypes, but they will in many months, or perhaps a couple of years tarden not know for sure.