The electronic gadgets in the market have proliferated in the market from media players to phones to palmtops and personal computers. Headphones have virtually become an essential accessory to all these devices. Those who use headphones, invariably use them for long hours. This could lead to hearing impairment, temporary or permanent, especially if the volume is high. When the outside noise is high, quite often listeners tend to increase the volume to drown out the outside noise. This could be the case in a subway, an aircraft, traffic or large crowds. With higher volumes, the normal pain that one has with high volume tends to disappear giving a false indication. Higher level volume for long duration damages the ear. About 5 percent of the headphone users stand to face this risk. Appropriate safety warning on products has been suggested. But this has not found favor amongst manufacturers and users.

In-ear headphones and canal phones pose lesser risk of hearing impairment. The volume need not be increased to drown external noise as the external noise itself is blocked by the noise isolation properties of the on-ear seal. In some countries, there are restrictions to using the headphones while driving vehicles including using earphones in one ear. The drivers face the risk of not hearing external noise such as car horn losing the awareness of the situation which can cause accidents. There are other activities that should either keep away from using of headphones or keep it at a low volume.

A number of companies manufacture headphones for DJs, professionals and Call Centers. There come in many models, styles and designs. The more reputed companies manufacturing headphones include AKG, Sennheiser, Grado, Bose and Sony. Sennheiser produces wired and wireless headphones as well as in-ear, mini and high definition headphones. The wired headphones manufactured by this company for instance include Sennheiser CX300 earphones, Sennheiser CX6, Sennheiser CX 500, Sennheiser CX 400, Sennheiser HD800, Sennheiser HD650, Sennheiser RS120 and Sennheiser PX 100. Details of all these products are found in the Internet. It is also possible to buy online.

Headphones were first introduced by Sony with their Walkmans. Headphones have become commonly used with a variety of devices such as radio, Discmans, CD player, audio amplifier, portable DVD players, Computers, DAT recorders, home theater, mobile phone, MP3s, iPhones and iPods.

Nowadays, gadgets were produced by companies so people could enjoy and have fun all they want. However, they should not overuse these gadgets for the sake of their own health.

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