Microphone wireless system feature XLR interfaces, just plug on and turn your favorite mics into wireless mics.Adopting advanced wireless UHF technology, the signal transmission becomes more stable.Equipped with 10 groups of channels, you can switch the channel as your requirement, so as to avoid interference from other equipments.Built-in rechargeable lithium battery, support continuous working up to 3 hours, after being fully .Widely applicable for live streaming, recording studios, meeting, speaking, interviewing, karaoke, etc. wire limitations, allowing you to enjoy the fun and convenience of wireless.TransmitterMicrophone Max Input: 1.5VRMsRF Carrier Frequency Range: 901m-910mMax Transmitting Power: 8dbmWorking Temperature: -20-80Working Current: 120mABattery Capacity: 700mAhReceiverMax RF Input Signal Amplitude: 10dBmReceiving Carrier Frequency Range:90m-910mReceiving Sensitivity: -85dBmAudio : 96dBWorking Temperature: -20-80Working Current: 120mABattery Capacity: 1500mAhColour:blackMaterial:plasticPackage Contents:1 x Transmitter1 x ReceiverOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.