Shure PGXD14/PG30-X8 Wireless Microphones The PC30 is an electret condenser microphone for headworn use with a wireless bodypack transmitter. It has a comfortable wireframe for secure fit and has a smooth, natural frequency response comparable to handheld microphones to give you excellent sound in a convenient, hands-free solution. The rugged PGXD1 bodypack transmitter easily clips onto a belt or guitar strap, and provides you with a 20Hz - 20kHz frequency range, up to 10 hours of continuous use on 2 standard AA batteries (not included), and 200' of wireless freedom. The PGXD4 receiver offers 24-bit/48kHz accurate sound, offers technology for incredibly accurate sound, auto frequency selection, and greater reliability thanks to its true digital diversity. The PC30 is an electret condenser microphone for headworn use with a wireless bodypack transmitter. It has a comfortable wireframe for secure fit. Has a smooth,natural frequency response comparable to handheld microphones to give you excellent sound in a convenient,hands-free solution The PGXD4 receiver offers 24-bit/48kHz accurate sound, offers technology for incredibly accurate sound, auto frequency selection.