The microphone is provided with a four-conductor (two shielded) coiled cable and a "Million-Cycle" leaf-type switch designed for constant use under the most rigorous conditions. The 514B fits naturally and comfortably in the hand and is not affected by heat or humidity. The exclusive ARMO-DUR case resists mechanical shocks and vibration, and is impervious to oil, fumes, salt spray, ultraviolet radiation, and corrosion.
* Smooth, extended frequency response from 100 to 6,000 Hz -- provides highly intelligible voice response
* "Million-Cycle" leaf-type switch -- provides outstanding reliability, even under extreme conditions
* Tough ARMO-DUR case
* Long-life, neoprene-jacketed, coiled cable
* Supplied mounting bracket fits hang-up button on back of microphone