Sennheiser AVX Camera-Mountable Lavalier Digital Wireless Set (ME2 Lavalier)
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Amazon.com: Lavalier Microphone Compatible with Sennheiser Wireless Bodypack Transmitter, Omnidirectional Condenser Lapel Mic 3.5mm with Screw Lock, 5ft : Musical Instruments
Amazon.com: Sennheiser Professional ME 2 Small Omni-directional Lavalier Microphone For Use With Wireless SK Bodypack Transmitters,Black : Musical Instruments