100 brand new and high qualityPropertyHighdefinition digital tube display frequency, makes operation more simple and 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 the amplification products, mainly to accept FM radio signals and electronic equipment with sound reproduction function can be used directly to a megaphone.Small and exquisite, portable, amplification function anytime, anywhere.Wide range of applications teaching, tour guide, sales promotions, 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 main power supply to the microphone, and the screen will display the radio station band number.2.Pressbutton to 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 which has FM radio function, extend the antenna and set to FM radio mode, set the radio frequency to the same as the number on the display. And you can use the wireless microphone after the machine matches the pair 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. Please 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. ThanksPackage Includes1FM Wireless Microphone Headset1Charging cable1Instructions for use