Shure PGA31 Cardioid Headset Microphone PGA31-TQG B&H Photo Video
Amazon.com: Shure PGA31 Headset Condenser Microphone with Cardioid Polar Pattern, Flexible Gooseneck, Foam Windscreen, and TA4F (TQG) Connector for use with Shure Wireless Systems (PGA31-TQG),Black : Musical Instruments
Pro Audio, Lighting and Video Systems Shure BLX14/P31 Wireless Headset System with PGA31 Microphone