This Wireless tour guide system is designed specially for guides and groups.It is a lightweight,multi-channel system that helps tour participants<br/>listen directly to the tour guide clearly,enhancing the wireless/effortless presentation effect between guide and participants.<br/><br/> <b>Features</b><br/> 40 channels:72MHz-76MHz, not 2.4G which is easy to be disturbed.40 selectable channels, no need to worry about signal interference. Current channel, battery level, signal level can be shown.<br/> Avoid the interference of other frequencies automatically.<br/> Small and lightweight, clearest voice transmission.<br/> 40 IDs allow 40 groups to use simultaneously.<br/> One transmitter can work with many receivers.<br/><br/> <b>Application</b><br/> Tour guiding, wireless meeting, wireless teaching ,Simultaneous Interpreting,corporate hospitality, Factory tour,field interpretation,Governmental Agencies,Houses of Worship,Conventions and Auditoriums,etc.<br/><br/> <b>Specification</b><br/> Transmitter & Receiver:<br/> Frequency Range:72MHz-76MHz<br/> Output power: 10mW<br/> Power Supply: DC 110-240V<br/> Power Input: 5V 1A<br/> Frequency Response:50-18000Hz<br/> S/N Ratio:≥90dB(Typical)<br/> Frequency Stability:+/-0.005%<br/> Modulation Deviation:+/-75kHz<br/> T.H.D:<0.3%@1kHz<br/> Battery type:Built-in 900mAh Lithium battery<br/> Charge: DC 5V 1A, mini USB port<br/> Battery life:18 hours<br/> Talk range:20-30 meters (65-100ft)<br/> Charge Port: mini USB<br/><br/> <b>Package Contents</b><br/> 1x Transmitter<br> 100x Receiver<br/> 1x clip-on microphone<br/> 100x earphone<br/> 101x charger<br/> 101x lanyard<br/> 1x English User Manual<br/><br/> <b>Note:</b>Orders Fulfilled By Seller to USA will use <b>DHL</b>,normally takes 3-7 business days for delivery.Please provide <b>valid phone</b> #.