Long Time Used 5G WiFi Wireless Conference System Audio Microphones Features: 1.Stylish, low profile design with touchable interface 2.5G Standard WiFi Wireless communication, with low voice latency and no interference from 2.4G signal, setting up all system in few minutes to be ready for using, and put them away in short time as well. 3.Built-in DC connector for power supply without battery 4.OLED screen, providing excellent brightness, contrast, wide viewing angle but low power consumption 5.Detachable battery pack is easy to replace and charge, 20 hours continuous working time after full charge. 6.Internal high fidelity loudspeaker 7.Head-set interface in both sides with volume adjust 8.Line-in interface which allows microphone or other line-in device like cell phone, laptop to pass audio through to perform teleconference 9.Full-digital signal transmission and processing, completely avoid the RF interference from cell phone or similar devices. 10.Support pluggable microphone and different length of microphone with strong audio collecting ability. 11.The microphone sensitivity of each unit and 16 level equalizer EQ can be adjusted independently 12.Timer on display to set certain time for each delegate to speak, will remind user or close the MIC automatically 13.All units can be configured as Chairman or Delegate unit through software settings based on model WDC-T. Technical Parameters Button Touchable interface, no physical buttons Sound Pickup heart type capacitance Sensitivity -46 dBV / Pa Maximum power consumption 2.0W Directivity 0 &deg; / 180 &deg;> 20 dB (1 kHz) Headphone load 16&Omega; Headphone volume 10mW Headphone jack 3.5mm stereo Input impedance 2k&Omega; SNR 70dB Frequency response 20 ~ 20000Hz Equivalent noise 20dBA (SPL) Main material ABS Operating temperature 0 &ordm;C to + 55 &ordm;C Color Black The maximum sound pressure 125dB (THD <3%) Weight 1.1kg (with microphone) Dimension 195W &times; 120L &times; 60Hmm(without microphone) Application