Head phones are usually used to listening music and audio without disturbing the people around you. The structure and style of head phones has changed long way, the headphones used by the people are radiophones and it was launched in 1919. Later the stereo headphones were created by John C. Koss and in 1978 supra aural headphones were introduced which were much smaller and portable. During 1990, the cordless headphones have a created a revolution among the music lovers and in late 1990's, earphones with ear buds and canal phones were introduced into the music market.
These headphones are mainly used to maintain privacy at the work place and to take down important notes while answering a call. They can be used while jogging and performing different exercises.
