Shure GLXD-RE4, GLXD advanced instrument receiver, Digital 2.4 GHz wireless receiver, Automatic frequency setup, Pilot tone, Microprocessor-controlled antenna diversity, Displays battery life in hours and minutes, Remote controllable transmitter gain, Integrated battery charge port, Metal housing, Detachable antennas on the rear side, XLR and jack outputs, High-resolution LCD display, 9.5"", 1U, Includes rackkit, antenna cable UA802-RSMA and power supply PS43E