2 Channel 50Hz-15KHz Pro UHF Wireless Microphone System Cordless Mic + Receiver

Specification 50MHz bandwidthMaximum offset frequency ±25KHz comprehensive characteristics Frequency response range 50Hz 15KHzSignal to noise ratio 72dBWorking temperature 10℃ 50℃Working distance 20mOperating voltage 3V two 5th batteries are not included Microphone appearance size 250 20mmPackage included 1 2 x microphone without battery 1 x 3 5mm audio interface1 x USB receiver rechargeable receiver optional