Nothing gives you more freedom than a Shure wireless kit. Made from the highest quality components to ensure that your signal will not be lost during a performance. System Includes: SLX2 Handheld Wireless Transmitters SLX Wireless Systems feature Shure's patented Audio Reference Companding for crystal-clear sound beyond the limits of conventional wireless technology. Features include: Automatic Transmitter Setup Backlit LCD with timeout feature Frequency and power lockout 3-segment battery fuel gauge 2 AA batteries (included) provide 8 hours of continuous use 518 - 782 MHz operating range Comes With Beta 58A Supercardioid Microphone SLX4 Wireless Receiver The SLX4 receiver brings unprecedented ease of use to wireless with Automatic Frequency Selection and Automatic Transmitter Setup. With included rack hardware and detachable antennas, it is ready for immediate installation right out of the box. SLX Wireless Systems feature Shure's patented Audio Reference Companding for crystal-clear sound beyond the limits of conventional wireless technology. Features include: Automatic Frequency Selection Automatic Transmitter Setup 960 Selectable frequencies across 24 MHz bandwidth Detachable 1/4 wave antennas Microprocessor-controlled diversity RF presence LED 5-segment audio meter Multi-function, backlit LCD Low battery indicator Frequency and power lockout Rugged metal chassis Volume control on rear of unit 1/2 rack design Furnished rack hardware Non-slip bumpers for use out of rack XLR and 1/4" outputs