Brand Name: Electro-Voice
Model Number: ULM-21
Descriptions:
The Electro-Voice® model 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. Its small size makes the ULM-21 ideal for theatre, interviews, public address systems, and houses of worship, utilizing its 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.
Features:
Back-electret cardioid microphone
Clothing clip attaches at microphone body to
      maintain cardioid pattern
Integrated 6-foot (180cm) cable
TA4F connector is compatible  with all EV bodypack transmitters
Use with TXA for wired XLR applications