Pro Audio Wireless microphone UHF
 8 channel microphone handeld Metal mics 
(3 years free warranty).

(This Microphone system comply with new FCC frequency rules)

8 mics can use together without influence
 Frequency range (520MHz-580Mhz)
Features:
8 Channel Receiver with 8 handheld Metal Microphones
Individual Volume Control on each Channel
Two/ 6.35" Mixed and 8 XLR Individual Outputs
Perfect operation status indicater
Four Telescoping Receiver Antennas
Broad frequency response range, super low distortion
Full metal design
Use 2*1.5V AA battery 

Specifications:
Overall System
Number of Channels:8 channels
Carrier frequency range:520MHz-580MHz
Stability:±0.006%
Normal deviation:±22kHz
S/N ratio:<120dB
T.H.D:<0.6%
Frequency response:50Hz-15kHz
Receiver 
Sensitivity:>80dB
Audio output:Balanced and Unbalanced
Power requirement:AC 16V,2000mA
Dimensions:610×400×190mm
Weight(weight):Approx 8 kg
 
Wireless Microphone 
Cartridge:Dynamic
Antenna:Built-in
RF output:<10mW
Normal deviation:±22kHz
Maximum deviation:±80kHz
Battery:1.5V battery
Battery life:>8 hours

Comes With 
8 handheld Whole Metal  mics 
4 antennas
1 audio cable
1 Base Transmitter 
US 110-240v Power Adapter