The SM31FH, a cardioid condenser microphone, is robust and hard-wearing, specifically designed with hydrophobic materials for optimal use in fitness instruction settings.

Its moisture-repellent cartridge housing extends the microphone's lifespan by shielding it from the corrosion that often deteriorates typical fitness instruction headsets.

Offered as part of the BLX and GLX-D wireless systems bundles, the SM31FH includes TA4F 4-pin (TQG) connectors, making it a compatible substitute for any Shure wireless headset system.