... hyperstable circuit,outstanding anti-jamming capability UHF wireless microphone seriesSystem Specification:Carrier Frequency:UHF 735-806MHzChannel Total: 2 ChannelDynamic ... than 0.005%Frequency Response: 70Hz-18kHz(±3dB)S/N Ratio: More than 105dBValid Distance: (>100)m, depending ... operation distance, ideal environment up to more than 70mAC adapter for receiver powerIt used for meeting room, stage, ...