UHF Dual Wireless Cordless Handheld Microphone mic System w Auto Mute

Brand New, 2 X 60 Frequencies Selectable, Comply with US FCC Rules
Perfect for professional use at any events: Karaoke, sound source recording and amplifying, vocal concerts, live-performances, conference, musical and opera, church, school, hall, family, party, etc...

Features 
•Backlit LCD display showing RF level, AF level, Channel Frequency and mute status. 
•60 Selectable frequencies on each channel
•Built-In Tone Lock Squelch circuit protection from RF interference 
•Automatic  transmitter setup,  the channel of the transmitter and receiver can easily synchronize 
•Dual channel receiver, Both microphones can be used at the same time
•Two XLR individual outputs and one 1/4" Mixed output 
•Individual volume control on each channel 
•Frequency:  UHF 640MHz - 690MHz
•Frequency Response:   20Hz~15KHz 
•Battery Life:  12 Hours ( AA batteries ) 
•Range:  Up to 300 feet ( 100 meters ) 
•Rack mountable, Fits 19" rack

Package includes:
(1)  Dual channel UHF receiver
(2)  Hand-held microphones
(1) 1/4" audio cable  
(1) AC-DC adapter ( 110V-240V universal )
(4) Manual

COMPREHENSIVE PERFORMANCE
Carrier Frequency: UHF640-690MHz
Frequency Stailization: < ± 30ppm
Sensitivity: 98dbm
Signal/Noise ratio: >89dB
Total Harmonic Distortion: <0.5%
Frequency Response: 20Hz~15KHz ± 3dB
Audio Output Level: Balance 0-300mV / 600Ω 
Dynamic Range: >105dB