Memorex MK1995 - Manual (Page 27)

External Microphone/Speaker
24
External Microphone Jack
Your MK1995 has an external microphone jack which enables you
to connect an external microphone in order to free your hands for
other tasks.
Simply raise the rubber flap and insert the microphone plug into the
microphone jack on the top of the unit.
Note : External speaker and microphone are not included with this
standard package.