Shure P3TRA215CL PSM300 Wireless Stereo Personal Monitor System with SE215-CL Earphones, G20 P3TRA215CL features SE215 Sound Isolating Earphones, all-metal components with optional receiver recharge ability, and more advanced receiver controls The P3TRA215CL 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 P3RA, P3T, SE215, rack mount and hardware kits, 1/4 wave antenna, BNC bulkhead adapter, BNC cable, power supply, battery adapter kit, 2 AA batteries, zipper bag, and user guide