Motorola Remote Speaker Mic – PMMN4013A

Windporting Remote Speaker Microphone 

MICROPHONE, REMOTE SPEAKER MIC, RX-JACK(2 PIN). This remote speaker microphone features Windporting and a 3.5mm audio jack.

Communicate clearly in challenging weather with this Windporting Remote Speaker Microphone. Windporting helps you communicate effectively and hear clearly in the howling wind, driving rain, and severe weather.
Windporting technology eliminates the whining and howling of wind blowing across your remote speaker microphone.
It also prevents water from clogging the microphone, which results in clearer transmissions.
This microphone features a 3.5mm audio jack that allows you to connect a receive-only earpiece for private communication.