The Shure BLX14UK/MX53-K14 Wireless Headset System is a high quality analog wireless system, perfect for vocalists, multi-instrumentalists and spoken word presenters. The system includes the professional Microflex MX153 Ear-Worn Condenser Microphone, along with the reliable BLX1 Bodypack Transmitter and BLX4 Wireless Receiver, offering superior hands-free performance for a wide range of applications.