With detailed 24-bit digital audio and reliable wireless performance, the P3RA bodypack delivers professional personal monitoring to any corner of the stage. Patented Audio Reference Companding ensures the clearest sound, with ultra-low noise and no artifacts. Perform a scan and IR sync to automatically select the cleanest frequency available and easily assign a wireless channel. Adjust the volume and use MixMode technology or stereo mode to create a personal mix from two channels of audio. Works with PSM300 Stereo Personal Monitor SystemDelivers up to 6 hours of continuous operation with 2 AA batteriesOffers extended runtime with the Shure SB900 lithium-ion battery, which can charge in the bodypackIncludes P3RA, 2 AA batteries, battery adapter kit, zipper bag, and user guide