Shure P3TR112GR PSM300 Wireless Stereo Personal Monitor System with SE112-GR Earphones, G20 Featuring SE112 Sound Isolating Earphones, P3TR112GR provides great sound and simple setup for entry-level users The P3TR112GR is part of the PSM300 wireless systems family PSM300 Stereo Personal Monitor Systems deliver reliable wireless freedom to every corner of the stage; patented Audio Reference Commanding ensures the clearest sound, with ultra-low noise and no artifacts Easy to setup and operate, PSM300 systems offer one-touch frequency scan and sync to find and assign a clean wireless channel; adjust the volume and use Mix Mode technology or stereo mode to create a personal mix from two channels of audio Includes P3R, P3T, SE112, rack mount and hardware kits, 1/4 wave antenna, BNC bulkhead adapter, BNC cable, power supply, 2 AA batteries, zipper bag, and user guide