The Shure PG14/PG30 Wireless Headset System includes PG4 Diversity Receiver, PG1 Bodypack Transmitter, and PG30TQG Headset Condenser for aerobic and spoken word applications. Shure PG14/PG30 main features include: PG30TQG Headset Condenser Microphone Comfortable wireframe for secure fit Smooth, natural frequency response comparable to quality handheld microphones Reliable at temperature and humidity extremes The PG30 is a robust headset condenser microphone for use with Shure wireless systems. The comfortable headset offers maximum freedom of movement when performing or presenting. Comfortable wireframe for secure fit Smooth, natural frequency response comparable.