OneTransmitter: with built-in high sensitivity micophone,user can hold it on hand to speak.

And it has 3.5mm interface to connect the shippedPendant Microphone,user can wear

the pendant microphone around his/her neck with packing the transmitter on the waist.

Moreover the transimtter has built-in laser pointer which assists the user to make a PPT presentation

by moving the PPT page up/down,one2.4G USB Receiverwill be shipped to support this function.

2.0 Active Speaker: this speaker is equiped with an antenna to receive the signal from the transmitter.

The speaker has AUX RCA inputs for connecting local audio source, and has one 6.5mm interface

available for connecting local wired microphone.

70V/100V line voltage input is ready for receving remote amplified signal.