The Shure PGXD14/PGA31 Digital Wireless Headset Microphone System is state-of-the-art with 24-bit / 48kHz digital technology for incredibly accurate sound and trusted Shure microphones. Natural frequency response tailored to vocals and clean RF signal. The one-touch sync automatically syncs the transmitter and receiver. It has 200 ft (60 m) operating range and has up to 10 hours of battery life. Includes a low profile bodypack that easily clips onto belts and guitar straps.