I already reviewed a couple of headsets but this is the first headphone I see. Now whats the difference between a headset and headphone? Well a headphone has a Microphone build in, retractable, removable, foldable or permanent. Then why do we need headphones if a headset is just a headphone with a mic? Well not all people need microphones, and some headsets have much better sound quality as well, or some people just don't like the look of a microphone sticking out. 
 
Most of the time headsets are being used by traveling people, on the bike, on the bus, on the train,... but also a lot of people use headsets to listen to music or watch movies at home, as headphones are way better then the average cellphone or Ipod speakers. But Also in gaming, where sound is very important there are people who are using headphones, although I do think gamers are mostly using headset for the mic to talk to their clan, friends or other players. There are also people who use headsets and a separate microphone. So headsets are still popular.