The 22-432 Kenwood throat mic uses an "indirect air-borne vibrations" technique to receive vibration enter which is generated on the skin near the vocal cords.

• It features high isolation capability, not only for environmental noise, but also from frictional vibrating sound generated by the microphone head.
• 2 1/2 foot cord with two prong plug.
• Easy to use.
• Water, dust, and corrosion resistant.
• Works with most Kenwood FRS radios