C544 L | High-performance sports head-worn condenser microphone
Amazon.com: AKG Pro Audio C555 L High-Performance Head-Worn Condenser Microphone : Everything Else
AKG C 555 L – Thomann United States
Amazon.com: AKG Pro Audio WMS420 Headworn Set Band A Wireless Microphone System with SR420 Stationary Receiver, P420 Pocket Transmitter, and C555L Headworn Microphone : Musical Instruments
Amazon.com: AKG Pro Audio C555 L High-Performance Head-Worn Condenser Microphone : Everything Else