Shure SLX14/93 Lavalier Wireless System, G4 SLX Wireless Systems are powerful wireless tools that can be set up quickly and used confidently by installers and working bands Features include auto frequency scan with transmitter setup, exceptional wireless clarity, and Shure patented Audio Reference Commanding Includes WL93 lavaliere microphone, SLX1 body pack transmitter, SLX4 receiver, tie clip, rack mount kit, two 1/4 wave antennas, power supply, 2 AA batteries, protective bumpers with 8 screws, vinyl bag, and user guide