Midland Radio G-300 - Manual (Page 17)

http://www.midlandradio.com - 17 -
External Speaker/Microphone Jack : Your G-300 can be used with an optional
external speaker/microphone or headset, freeing your hands for other tasks. To use
an optional / speaker / microphone or headset:
•
Insert the plug(s) into the SPK/MIC
jacks
•
Place the earbud into your ear, and
adjust the mic into your desired
position.