Type: Dynamic * Frequency Response: 60 to 11,000 Hz * Polar Pattern: Cardioid (unidirectional) * Press-to-Talk Switch: locking or nonlocking operation to actuate microphone circuit and an external relay or control circuit. * Cable: 2.1 m (7 ft) four-conductor, two conductors shielded non-detachable * Microphone circuit normally shorted in both high and low impedance