Cardioid condenser headset microphone for wireless systems features hydrophobic construction that repels moisture. For use in fitness instruction.

from $99.00

The rugged and durable SM31FH is a cardioid condenser microphone constructed with hydrophobic materials that make it ideal for true performance in fitness instruction applications.

The moisture-repellent cartridge housing ensures a long product life by protecting the microphone from the corrosion damage that causes typical fitness instruction headsets to fail.

Available in bundled BLX and GLX-D wireless systems, the SM31FH features TA4F 4-pin (TQG) connectors that make it a viable replacement for any Shure wireless headset system.


Fitness Instruction

Microphone Type


Lightweight, sensitive diaphragm. Precisely and smoothly captures sound nuances. Powered by battery or phantom power supply.

Polar Pattern


Picks up the most sound in front of the microphone and some from the sides. Less susceptible to feedback in high volume environments.

Frequency Response


Smooth, extended response. Tuned to accentuate specific types of instruments or voices.

Form Factor


Model Line


SM Microphone Product Brochure (PDF)
SM31FH Specification Sheet (PDF)
SM31FH User Guide (PDF)
  • Wireframe headset fits securely and comfortably for fitness and aerobics instructors
  • Moisture-repellent hydrophobic fabric protects the microphone cartridge from harmful corrosion that occurs in humid environments
  • Flexible gooseneck provides discrete adjustment capabilities to optimize placement for greatest isolation
  • Lightweight and low-profile design won’t fatigue instructors during high-impact use
  • TA4F (TQG) connector is compatible with any Shure wireless bodypack
  • Included windscreen tames plosive, breath, and wind noise for clean and intelligible sound
  • Tailored frequency response ideal for crisp, clear vocal reproduction
  • Available with bundled BLX and GLX-D wireless systems
  • Legendary Shure precision engineering for durability and performance
Electret Condenser
Frequency Response
45–20,000 Hz
Polar Pattern