Shure Wireless Headworn BLX14/SM31 Microphone System, 662-686Mhz Frequency

Professional fitness instructors and performers can now own the stage with confidence using the BLX14/SM31 Headworn Wireless System, engineered specifically for high-impact environments where moisture and movement are constant challenges. This comprehensive wireless solution operates on the M17 frequency band and combines Shure BLX® technology with the specialised SM31 fitness headset microphone, creating an accessible entry point into professional-grade wireless audio performance.

The system includes everything needed for immediate deployment: the BLX4 wireless receiver with microprocessor-controlled internal antenna diversity, BLX1 bodypack transmitter, SM31 fitness headset microphone, plus essential accessories including power supply, clothing clip, windscreens, and user guide. The BLX4 receiver features simple setup with XLR and ¼" output connectors, while its One-touch QuickScan frequency selection automatically locates the best available frequency when interference occurs. The lightweight BLX1 bodypack provides up to 14 hours of continuous operation on just two AA batteries, with adjustable gain control and quick receiver frequency matching capabilities.

Built for the demanding world of fitness instruction, the SM31FH cardioid condenser microphone stands apart with its hydrophobic construction materials that actively repel moisture and protect against the corrosion damage that typically destroys standard headset microphones in humid environments. The wireframe design ensures secure, comfortable positioning during high-impact activities, while the flexible gooseneck allows discrete adjustment for optimal placement and vocal isolation. With its tailored frequency response optimised for crisp vocal reproduction and TA4F connector compatibility with any Shure wireless bodypack, this system delivers the reliability and sound quality that professional instructors demand.