Earphone or Headphones are loudspeakers that are small in size and are used and designed in such a way that a user can fit it into the ears. It has a wire which is connected to its source of signal like CD player, audio amplifier, radio, mobile phone, portable media player or any wireless device, which has the capability of picking up signal without a wire. Some of the famous companies that produce earphones include Panasonic, Sony, Iball, Sennheiser, Yamaha.
Earphone is basically of two types: Earbuds and In-ear Headphones.
Earbuds are small headphones that fit in the outer ear, but not inserted into the ear canal. Though they are portable and convenient, it is often considered to be uncomfortable as many people complain it of being not able to fit in properly. To increase the comfort level, many times it is sold with foam pads.
The second type is called In-ear headphones. It is inserted in the ear canal itself. And hence, the possibility of falling out is reduced. It blocks out much of the environmental noise which, at times, can be a problem when exterior sound becomes necessary viz. When walking or driving a car in traffic.