100brand new and of high qualityFunctionHighdefinition digital tube display frequency makes the operation easier and more convenient.The builtin battery can not only be used repeatedly charging, and light weight use safety.A single charge can always use more than 10 hours, long battery life.There is no limit to amplification products, mainly to accept FM radio signals and electronic equipment with audio playback function can be used directly to a megaphone.Small and exquisite, portable, amplification function anytime, anywhere.Widely used teaching, tour guide, sales promotion, lectures, meetings, karaoke, fans singing and so on.FM Wireless Microphone Headset only, other accessories demo in the picture is not included.SpecificationsItem type FM wireless microphone headsetSize 14417cm5.51.56.6inColor BlackResistance 680OhmSensitivity 52dB1.5dBWireless distance 1520m4965inTransmission frequency 87Mhz108MhzQuantity 1 pcOperating steps1.Turn on the microphone main power supply, and the screen will display the radio station band number.2.Press the buttonto adjust the radio frequency and select a band number between 87.5MHz108MHz. Note Select the number that does not exist in the local radio frequency bands, for example 89.7.3. Turn on the machine that has FM radio function, extend the antenna and set to FM radio mode, set the radio frequency to the same as the display number. And you can use the wireless microphone after the machine is matched with the relationship frequency.4.Put the microphone on your head and speak into the microphone, you can amplify your voice.NoteTransition 1cm10mm0.39inchPlease allow 0.1cm error due to manual measurement. Make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. ThanksThe package contains1FM wireless microphone headset1charging cable1user manual