4 Wireless Microphone Professional UHF Cordless Vocal Stage Handheld mic System 
　
Features  　 　 　
Backlit LCD display showing RF level, AF level, Channel Frequency and mute status.
200 Selectable frequencies on each channel, multiple units can be used simultaneously
Diversity operation for increased range/reliability, reducing dropouts.
Built-In Tone Lock Squelch circuit protection from RF interference
Automatic  transmitter setup,  the channel of the transmitter and receiver can easily synchronize
Four channel receiver, Four microphones can be used at the same time
Four  XLR individual outputs and one 1/4" Mixed output
Individual volume control on each channel
Frequency:  UHF 770MHz - 800MHz
Frequency Response:   35Hz~18KHz
Battery Life:  12 Hours ( AA batteries )
Range:  Up to 300 feet
Rack mountable, Fits 19" rack
 
Package includes:
(1)  Four channel UHF diversity receiver
(4)  Metal Hand held  microphones
(1) 1/4" audio cable  
(1)  AC-CD 110V-240V universal adapter
(1) User's manual　

Plesae contact us if you have any questions.