EXMAX UHF-938 Professional UHF Wireless Tour Guide System for Tour Guiding， Teaching， Travel， Field Interpretation - 1 Transmitter and 10 Receivers<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> UHF radio frequency for interference-free reception </span></li><li><span class="a-list-item"> Frequency synthesized PLL circuitry for stable signal transmission， Automatic mute control for silent standby ， Individual volume control on each receiver. </span></li><li><span class="a-list-item"> Two jacks for the microphone and line ensuring variable utilization </span></li><li><span class="a-list-item"> NOTE before Buying: Please DON’T buy many or large quantity sets/units one time if you never operated this system before or don’t know what it is for . Strongly advise customers just to buy one set/unit to test this system and completely understand its functions and know its advantages and disadvantages. </span></li><li><span class="a-list-item"> If you like it after testing， you could buy many sets/units one time. Once a customer bought many sets/units of this system but immediately request returning right after he received the package due to he didn’t like it and he realized that it’s not what he want. This raised too much costs and waste to the transaction， your kind understanding would be highly appreciated. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41hGJs2A-ML.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/413QoOGh5JL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41f70AOiOjL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41IHW8%2BI7IL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41cKc80JkYL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41t9c3qgNDL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51FnnDAYk%2BL.jpg" noproxy>