ULM-21 is a miniature cardioid, electret condenser lavalier microphone. It is designed for unobtrusive miking of speech and instruments, making it an excellent choice for use in many broadcast, stage performance, and presentation purposes. It’s small size make the ULM-21 ideal for theatre, interviews, public address systems, and houses of worship, utilizing it’s cardioid polar pattern for high gain before feedback. The ULM-21 condenser element provides clear and natural sound reproduction, minimizing wind noise and popping with use of the supplied windscreen.