●Four-channel reception, adopting true diversity receiving system, the system has excellent anti-interference performance and strong signal reception ability. ● Built-in frequency automatic scanning function, the scanning results can be viewed on the LCD screen, you can quickly search and lock the non-interfering frequency in the working state, which is practical and strong. ● With one key lock screen function, operated by function group key ● The main unit display can show the transmitter start-up working time. Adopting shuttle knob, with Chinese and English language function selection; 31 levels of digital electronic volume control, to ensure the consistency of the sound of each channel. Dual-colour display (orange backlight when the frequency is not aligned, and white backlight when the frequency is successfully aligned), the connection status is clear at a glance, which is convenient for management. 4 rubber receiving antennas on the back of the receiver to enhance the received signals, with a generous and decent appearance; 4 balanced outputs and 1 hybrid unbalanced output on the back, suitable for connecting various external devices; ● High-quality microphone, strong pickup distance, high-fidelity single-directional condenser microphone core, sound reproduction, high clarity, low noise; ●Use 1.5V battery (2 pcs) alkaline or rechargeable batteries Suitable for all kinds of meeting and speech occasions. Receiver parameters Oscillation mode. Phase-locked loop frequency synthesis