Are you fond of listening to music while on the move? Headphones or earphones enable a person to listen to music without disturbing others from an iPod/mp3/mobile phone/walkman etc. The earphones come with a tiny loudspeaker that enables only you to hear once inserted in your ears or even placed close to the ear. Such headphones can be used even for stationary appliances such as PC, laptop, videogames, or the DVD. Nowadays cordless headphones are also in the market. Professionals such as disc jockeys call centre staff, and sound engineers make good use of headphones. It is advisable not to use headphones with music on high blast as it may render one deaf. Continuous listening through earphones for long periods may cause headaches, hearing impairments, or ear infections, so better to stick to shorter periods of listening.