AKG Pro Audio CM311 A XLR Version Head-Worn Condenser Microphone by AKG Pro Audio-
AKG CM311 Head-worn Condenser Mic with Mini XLR | PSSL ProSound and Stage Lighting
Amazon.com: AKG Pro Audio CM311 XLR Reference Head-Worn Condenser Microphone with XLR Connector, Black : Everything Else
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
Crown CM311 W/TA4F Reference Head-Worn Condenser Microphone with TA4F