Visual Sound, Inc. Dynamic Noise canceling Palm held microphone 631L

Astatic Commercial Audio Products For close talking/paging applications in security or mobile communications or emergency or bus call stations. 360° elimination of background noise and resists feedback. Soft Curved lip guard to encourage proper spacing for best up-close use. Rugged polyester mic element resists effects of extreme temperature ... moisture... most acids... alkalines & solvents. Molded high impact resistant Cycolac body. Permanently attached heavy-duty 4-conducter 2-shielded coiled chord with stripped & tinned ends.