It is a two-way radio communication device that allows users to conduct instant voice communication within a certain range. It usually consists of a transmitter and a receiver. The user can talk by pressing the "send" button, and release the button to switch to the receiving mode to listen to the other party's voice. The communication range depends on its power and frequency, generally ranging from a few hundred meters to tens of kilometers. The design is simple and practical, easy to operate, suitable for use in various environments. Enough to achieve point-to-point or one-to-many communication mode, very suitable for team collaboration and command scheduling. With the continuous progress of technology, the application prospect of walkie-talkie in the field of communication is still broad.