Shure SM31FH-TQG Cardioid Condenser Headset Mic for Fitness Applications sm-31-fh-tqg - Canada's Favourite Music Store - Acclaim Sound and Lighting
SM31 FH- Shure Fitness Headset - can be adapted to other brands – bodymics
GLXD14/SM31 - Digital Wireless Headset System with SM31FH Fitness Headset Microphone - Shure Middle East and Africa
Shure SM31-FH Fitness Headset Microphone — AV Now Fitness Sound
Amazon.com: Shure BLX14/SM31 Wireless Microphone System with BLX4 Receiver, BLX1 Bodypack Transmitter and SM31FH Fitness Headset Condenser Mic with Moisture-Repellent Cartridge for Workout Instructors - H9 Band : Musical Instruments
BLX14/SM31 - Wireless Fitness Headset System with SM31FH Headset Microphone - Shure USA