Dual Channel Wireless Microphone System UHF Handheld Mic Cordless GLXD4 Vocal. •Frequency: UHF 640~690MHZ. •(1) Dual channel UHF receiver. Perfect for professional use at any events: Karaoke, sound source recording and amplifying, vocal concerts, live-performances, conference, musical and opera, church, school, hall, family, party, etc.
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