SPECIFICATIONS:Plug: US(We will sent with an adapter according to your country)Input:100-240VACOutput:12V 1ACarrier Frequency: UHF 613-870MHzFrequency Steadying: Less than 0.002%Modulating Mode: FMAudio Dynamic Range: Over 70dBAudio Frequency Responses: 100Hz-15KHzAudio Output Level: 0-280mVS/N Ratio: Over 70dBT.H.D: Less than 0.5%Sensitivity: 3uV For 30dB S/N MAIN FEATURES:◆ Wide frequency response, high S/Nratio.◆ High precision quartz crystal locked frequency technology.◆ Resist disturbing strongly, limit noise output.◆ No hitting when putting in the switch, so can protect the amplifier and Speakers.◆ With a wide using range for over 100meters for compandor type or 50mters for non-compandor type in a good surrounding, for 40-60m for compandor type or 20-30mteters for non-compandor type in a duplicate one.◆ With a complete working state and power level indication.◆ A double-way channel design, tow hands holding each two microphone at the same time to sing without any disturbing caused by. Package Included:1 x Receiver2 x Microphones1 x Audio Line1 x English Manua Note:1. Please allow 1-5mm error due to manual measurement and make sure you do not mind before ordering.2. Due to the screen difference, the color may be a little different from what you expect, please allow it, thank you!