4 Channel Wireless Microphone Handheld Dynamic Mic Pro Audio UHF Karaoke Party

System Features:
UHF 4 Channel Professional Receiver
4 channels can work without interference at the same time
Audio mute circuitry for quiet operation
Individual Channel Volume Controls
introducing frequency compressing expanding technique to lower the noise and enlarge the dynamic range
Perfect operation status indications
Broad frequency response range, super low distortion
Four Long Receiver Antennas
Specifications:
Number of Channels:4 channels
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,400mA
Dimensions:440 x 210 x 40mm 
Weight: Approx: 1.3 Kg
One 1/4" Mixed and four 1/4" Individual outputs
Wireless Microphone:
Cartridge: Dynamic
RF output:<10mW
Normal deviation+/-  22kHz 
Maximum deviation:+/-80kHz 
Battery:2 x 1.5V battery (Not included)
Battery life:>8 hours
Package:
Receiver x 1 pc
Microphone x 4 pcs
Manual x 1 pc
Antenna x 4 pcs
Audio Cord x 1 pc
Power Supply x 1 pc
Remark:
The power plug type depends on your country.