Wireless System for Fitness Instructors - Samson SW9A9SQE UHF with hea – bodymics
Galaxy Audio GAL08FITNESS TV8 AC/Battery-Powered 120 Watt Portable Sound System - Basic System + 1 E-mic Fitness Headset Wireless Mic System + Supreme Pouch + 3 Color Foam Windscreens
GoMic - Bendable Water Resistant(IP65) Fitness Headset Microphone – YesMic.com - Fitness Audio Systems
Amazon.com: Wireless Microphone System for TWO People, 165 ft Long Range Stable Wireless Transmission, One for Two Portable Headset Microphone for Voice Amplifier, PA System, Teacher, Fitness Instructor, Outdoor : Musical Instruments