Boway U-170 Wireless 4-Handheld Microphone Specs: RECEIVER Operating frequency:500-980MHz ACT/IR/SYNC technology S/N ratio:>105dB T.H.D distortion:<0.5% Frequency response:40Hz-18KHz distance:50-80meters TRANSMITTER Channels:200 channels Bandwidth:50MHz Channel space:250KHz Frequency stability:±0.005% With FM max frequency adjusting:±45KHz RF output: High 10mW/Low 5mW Power supply:2pcs*AA batteries
