Low impedance handheld dynamic microphones with a pushto- talk switch is an omnidirectional microphone with a tailored frequency response for high articulation speech transmission under normal ambient noise conditions. The microphone can be used in noisy situations where successful voice communications would otherwise be impossible. Both microphones have a high output level and great performance stability through wide extremes of temperature and humidity, making it an excellent choice for communications. Typical applications include amateur radio, police, marine services, commercial and paging. It is designed for comfortable, convenient to use. The functional styling, the extremely durable Polycarbonate housing and the lifetime switch assembly all result in a microphone with superior performance, capable of long-term survival in the most demanding applications.