Features: It is easily for you to choose your frequency LCD and buttons, which can gives you a better using experience. The working frequency can be setted by the user\'s requirements and change it by your minds. With LCD display screen, and the background is light blue, which can let you see the data more clearly. With two input volume adjustable: audio and mic, you can choose the type you like to use. With auto save the working frequency function, before shutdown, the-transmitter boot will automatically jump to a time. The PLL is professional, which is 100% drift, so you do not need to change it often.