Shure Prologue is a dynamic microphone with a cardioid (unidirectional) pickup pattern, making it ideal for use in situations where feedback is a concern. It has a tailored frequency response that provides vocal intelligibility and crispness, making it a good choice for karaoke, sound reinforcement, or recording. The on/off switch with lockplate allows you to lock the switch in the on position to prevent accidental shut-off. The spherical wind and pop filter minimizes wind noise and breath popping, making it suitable for outdoor use.