Shure 201 is a handheld microphone with a ceramic cartridge, designed for clear and crisp voice reproduction. It is omnidirectional and has a frequency response of 200 to 4,000 Hz. The microphone is equipped with a heavy-duty push-to-talk switch and a tough, rubber-jacketed, four-conductor coiled cable. It is also resistant to oil, grease, fumes, salt spray, sun, rust, and corrosion. The Shure 201 is ideal for use in mobile communications, such as police, fire, utility, forestry, and transportation services, as well as fixed stations, amateur radio, and Citizens Band applications.