Used Shure ULXP4 784-820 MHz Wireless Microphone System by Shure - Item# 51065
SHURE ULXP4 receiver problem - YouTube
ULX-D
Shure ULXP-24/58 Wireless Handheld Microphone System – SoundandVideoRentals.com
Ta4f Mini Xlr 4 Pins Tie Clip On Lavalier Microphone For Shure Slx4 Glxd4 Glxd6 Qlxd4 Ulxp4 Wireless System Bodypack Lapel Mic - Microphones - AliExpress