SM31 FH- Shure Fitness Headset - can be adapted to other brands – bodymics
Shure SM31 Fitness Headset Condenser Microphone with Moisture-Repelling Hydrophobic Construction for Workout Instructors, TQG Connects to Shure Wireless Systems (Bodypack Transmitter Sold Separately) : Musical Instruments - Amazon.com
Shure Blx14/sm31-h10 Wireless System With Sm31fh Fitness Headset Microphone for sale online | eBay
Shure SM31FH Fitness Headset Microphone & Case | IDJNOW