Original
By certification 
Product Description
Please note that we have several models like this model, if you tell us what's your requirements, we would like to provide the proper model for your reference.
Below pictures just for our newest 002LN model, if you need more detail about 002LN model or other models please do not hesitate contact us anytime.
Demo pictures
When the tour guide system use for travel/factory visiting/museum visiting/training/teaching.
1. A tour guide/speaker/leader( with 1 transmitter +1 microphone) speak to their group at a comfortable coversation speck level. 2.Listeners (with 1 receiver + 1 earphone) can hear every word clearly, even in noisy surrondings. (within 200 meters the transmitter as the centre)
As it's show in the below picture.
