The Joyo MW-1 can take any dynamic wired microphone and turn it into a wireless microphone for small stage performers, power-point presenters and karaoke stars (microphone not included). Four switchable channels means that you can use up to four wireless units at a time. This set includes (1) XLR wireless transmitter, (1) XLR Wireless receiver, (1) USB Charging cable to charge both transmitter and receiver at the same time.It does NOT provide phantom power, so condenser microphones are not compatible.FeaturesAbuilt-in rechargeable lithium batteryTransmission distance > 30 meterslt adopts 5.8GHz ISM frequency band4 switchable channelsDelay time < 5ms24bit Audio Resolution with Sampling Frequency of 48KSpecificationsMW-1 receiverPower supply mode: built-in lithium batteryCell capacity: 3.7V 400mAhReception Sensitivity: -85dBmReceived frequency: 5.8GHz frequencyAnti-jamming method: Frequency hoppingSignal Distortion: <0.02%Gain: 0 dBSNR: 105dBFrequency response: 20Hz- 20KHzDelay time: <5msSampling rate: 24-bit /48KHzoutput lmpedance: 680ΩPort's type: XLR male portMW-1 transmitterPower supply mode: built-in lithium batteryCell capacity: 3.7V 400mAhTransmission power: 7dBmWorking frequency: 5.8GHz frequencyAnti-jamming method: Frequency. hoppingFrequency response: 20Hz- 20KHzDelay time: <5msSampling rate: 24-bit /48kHzlnput Impedance: 3.3KPort's type: XLR female portBattery life 4hrs-5hrs