Pyle Wireless Microphone System (PDWM3800) Strong anti-interference for simultaneous multi-system use - Transmitting power: Max.(18dBm3mW);10dBm (10mW) - Output delay: 10-30ms (selectable) - Power supply: 110V/220V Transmitting Power: Max.(18dBm3mW);10dBm (10mW) - Output delay: 10-30ms (selectable) - Power supply: 110V/220V Two LCD screens on Receiver - Dynamic Range: 120dB - Digital channel: Two way UART Interface, Baud rate: 9600bps 1/4" mixed input, 2 XLR individual balance inputs - Harmonic distortion +_ Noise:.1%(20Hz to 20kHz) - Audio Digital Interface: 12S output, 44.1k sampling, 24 bit PCM Carrier Frequency: 18-20KHz - S/N Ratio: &gt;90dB (20Hz TO 20kHz) - Working Distance: 50-80 meters