800 Channels Digital UHF Wireless Microphone System Condenser Cardioid Chorus Wireless Mic Audio Studio Recording Choir Mic - AliExpress
VocoPro UDH-CHOIR-4 UHF Handheld Wireless Microphone Package - Swing City Music
Amazon.com: Shure GLXD24R+/SM58 Dual Band Pro Digital Wireless Microphone System for Church, Karaoke, Vocals - 12-Hour Battery Life, 100 ft Range | SM58 Handheld Vocal Mic, Single Channel Rack Mount Receiver :