Professional VHF Wireless SystemQuartz Lock for Drift-Free OperationFour Microphones IncludedPower On/Standby/Off SwitchPower LED Indicates StatusAudio Mute Circuitry For Quiet OperationAdvanced Companding CircuitryAF Signal LED Segment Meter On Each ChannelIndividual Channel Volume Controls w/ LED DisplayIndividual 1/4'' Unbalanced OutputsXLR Balanced and 1/4'' Unbalanced Mixed OutputOperation Range: Up To 240 ft.Each Mic Powered by 3 'AA' BatteriesSystem Includes 1/4" Audio Cable, Power Adapter & Batteries110V/220V SelectableRack Hardware IncludedSold as: UnitWeight: 9.23 lbs.