Desktop and palmheld series microphone. Frequency response, especially tailored for voice communications, provides crisp, clear, highly intelligible sound. The model 611L with modern tear drop styling, offers extreme reliability, convenient handling, rugged construction and high performance for years of dependable service. The dynamic cartridge has a strong polyester diaphragm which resists moisture, temperature extremes, most acids, alkalines and solvents. Molded in high impact Cycolac, the 611L comes with a permanently attached, heavy duty, four conductor, two shielded, coil cord. The low impedance 611L has a DPDT long life, trouble free switch and is factory wired normally open.