Samson AirLine ATX Series AWX Wind Instrument Micro Transmitter UHF Wireless System with HM60 Microphone and CR99 Receiver - AliExpress
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Amazon.com: Audio 2000S S6073M UHF Antenna-Diversity Wireless Lavalier Microphone with One Body-Pack Wireless Transmitter, One Lavalier Microphone, and One Wireless Receiver : Musical Instruments