PylePro Model : PDWM55004-Ch. Wireless Microphone SystemVHF Wireless Microphone System with (4) Handheld MicrophonesProfessional VHF Wireless System Quartz Lock for Drift-Free Operation Four Microphones Included Power On/Standby/Off SwitchPower LED Indicates StatusAudio Mute Circuitry For Quiet Operation Advanced Companding Circuitry AF Signal LED Segment Meter On Each Channel Individual Channel Volume Controls w/ LED Display Individual 1/4'' Unbalanced Outputs XLR Balanced and 1/4'' Unbalanced Mixed Output Operation Range: Up To 240 ft. Each Mic Powered by 3 'AA' Batteries System Includes 1/4" Audio Cable, Power Adapter & Batteries110V/220V Selectable Rack Hardware IncludedUsing manufacturing breakthroughs pioneered by Pyle, the PDWM5500 system redefines the price point for quality microphones. Class A solid state electronics are engineered for low noise, distortion and coloration. You will be amazed at how much microphone PDWM5500 gives you for the money. Pyle has been in business for over 35 years, and their manufacturing experience and expertise is easy to see - and hear.