Shure P3R Bodypack Receiver for PSM300 Systems (G20 Band - 488-512 MHz)With its slim, lightweight, durable design, the P3R offers reliable wireless freedom that covers every corner of the stage, with up to 300 feet (90 meters) of range. Simply connect a set of earphones and adjust the controls to create a wireless personal mix. Patented Audio Reference Companding and 24 bit digital audio clarity ensure the clearest sound, with ultra low noise and no artifacts. Features: One touch frequency scan and automatic frequency