Headsets enjoy wireless communication or soundtracks

Earlier, people used to send letters which were getting delivered in weeks and months. Sometimes, those were getting lost in pile of letters. To escape this problem, scientists made landline telephones which were fixed to one place and could not be carried in pocket. To meet this requirement, experts configured mobile phone. Such kind of device is light in weight and can be carried away anywhere in pocket. To communicate with it, you have to hold it in hand and stick to ear. To talk in a

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