Yarmee YCU893 conference system has wireless system receiver unit, 160 x 32 dot matrix LCD display, up to 100 meters operation distance, wireless chairman microphone, wireless delegate microphone, 5 microphones can be turned on at the same time, strong anti-jamming function, built-in feedback eliminating technology, multiple noise detecting circuit, record and loudspeaker audio play, support video camera auto-track function and built-in battery.