4 channels.Digital UHF adjustable frequency.

IR automatic. totally 400(2*200) frequency.Stepping up/down by 0.25MHz.

Every microphone can use in every channel.

20 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.