The present invention relates to a kit comprising a microphone and a headphone, and also a case member provided with a first cut-out region for accommodating the microphone and a second cut-out region for accommodating the headphone as well as electronics means for charging the microphone and/or the headphone; the microphone comprising: a sound-receiving portion; a headphone connecting portion; an extension portion connecting a distal end arranged to connect to the sound-receiving portion and a proximal end opposite the distal end thereof and arranged to connect to the headphone connecting portion, the proximal end extending a distance from the distal end such that a voice signal received is greater than the environmental noise thus yielding a higher signal to noise ratio; the headphone comprising: a main body portion dimensioned for adapting to the user's ear contour to retain the headphone on the ear; a microphone connecting portion provided on the main body portion; each of the headphone connecting portion and the microphone connecting portion is provided with magnets, when the microphone is in use, the microphone is arranged to detachably connect to the headphone by means of their respective the magnets. The kit of the present invention allows the use of a boom microphone in a portable headphone.