AKG CM311 w/Mini XLR Reference Head Worn Condenser Microphone Mic 2-Da – musicforall.biz
AKG CM311-Mini XLR Light, rugged head-worn mic for presenters, with Mini XLR Connector for PT - Canada's Favourite Music Store - Acclaim Sound and Lighting
CM311 High-Performance One Ear Hanging Microphone For AKG Samson Gemini Wirelss BodyPack with Zipper Case Mini 3-Pin XLR - AliExpress
Harman Pro 6000H50940 Cm311 Mini Xlr Head-Worn Vocal Microphone Xlr Non Not Europe.