*4 channels.Digital UHF adjustable frequency.

*IR automatic. totally 400(4*100) frequency.Stepping up/down by 0.25MHz.

*Every microphone can use in every channel.

*4 controllers can used simultaneously.

*LCD screens(black background and write word) show working status on the receiver and emitter.

*There are 2 balanced output and 1 mixed unbalanced output,2 rubber antennas.

*Microphone power consumption is 80mA. With 1.5V*2 battery power supply, it can work constantly for 8 hours. 

*Beltpack mircrophone is plastic body,handheld microphone is metal body.

*Working distance: 50-70 meter.

*It's suitable for various kinds of meeting occasion.