K-230 Church Wireless Microphone, 2channel UHF Wireless Mic 30-50M Range, Adjustable Frequencies, Good Pickup, Suitable for Church, Karaoke, Meeting

Frequency: Optional UHF band (630--690MHz)
Digital audio transmission technology.
Unique digital 32 bit ID pilot technology, avoid interference even same frequency.
Ultra-short audio latency.
Audio sampling mode: 48KHz.
Frequency response: 50Hz - 18KHz.
Auto frequency scanning.
Ideal distance: 40m
Channels: 60