Throat activated microphone with earphone unit for use only with walkie-talkies that do not have voice control or amplifying circuitry, such as the Midland 77-830

The 22-430 microphone uses an "indirect air-borne vibration" technique to receive vibrational energy (single side only) which is generated on the skin near the vocal cords.  It features High isolation capability, not only for enviromental noise, but also from frictional vibrating sound generated by the microphone head. 

Light, comfortable, and easy to use --- Can be hidden --- For use in high noise situations

Water, dust and corrosion resistant (resistant does not mean waterproof)

Package Contains

Earphone

Neck ring

Microphone head

PTT box

Finger PTT switch

Hook & loop fastening tape

PTT jack

Walke-talkie plug