Pro Audio Wireless microphone UHF 8 channel microphone 8 bodypacks 8 lapel mics 8 headsets (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 bodypacks 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 bodypacks 8 lapel mics 8 headsets 4 antennas 1 audio cable 1 Base Transmitter US 110-240v Power Adapter