Wireless handset

The invention provides a wireless handset. The wireless handset comprises a microprocessor, a memory, a voltage detector, a radio-frequency identification module, a power source, an input keyboard and a display screen; the microprocessor is connected with the memory and the radio-frequency identification module; the output end of the input keyboard is connected with the microprocessor; the output end of the microprocessor is connected with the display driving circuit and a loudspeaker; the output end of the display driving circuit is connected with a display screen; the voltage detector is arranged at the output end of the power source and connected to the microprocessor via an A/D converter; the power source providing a working voltage for the microprocessor, the display screen, the loudspeaker and a backlight. The wireless handset is provided with a wireless communication interface and a USB interface to realize remote and close data transmission; electric energy is saved; an external power source and built-in battery combined power supply mode is adopted to facilitate use.