Brand new only opened to photograph and check over Wireless Microphone 4 Channel Acemic Q4 Wireless Microphone 4 Channel System Features UHF 600-928MHz frequency range Wireless Digital audio transmission. Ultra-low audio latency. 48KHz audio sampling frequency. Digital ID code technology can avoid audio frequency jamming. Transmitter has these features: Switch channel, adjust volume and set button lock mode ( button lock only available for handheld mic). Up to 164 feet (50m) line-of-sight range. Suitable for karaoke singing, church preaching, teachers classroom teaching etc.
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