Amazon.com: Kimyah Wireless Lavalier and Headset Microphone System,Dual UHF Cordless Bodypack Mics, 2 Lavalier and 2 Headset Microphones, 328ft Range,Ideal for Church and Teaching, Lecture(KY-6208) : Everything Else
Galaxy Audio Trek GTU Mini UHF Dual Wireless GTU-VSP5AB B&H
Shure GLXD14+ Digital Wireless Headset System with SM31FH Microphone | Sweetwater
Shure BLX14/P31 PGA31 Wireless Headset Microphone System
Amazon.com: Wireless Microphone Headset, Wireless Headset Microphone System with Digital Screen, Headset Mic/Handheld Mic 2 in 1, 164ft Range, 1/8''&1/4'' Plug for Amplifier, Speaker, PA System, Speech, Teaching : Musical Instruments