This system includes:SM58 Microphone CartridgeSLX2 Transmitter SLX4 Diversity ReceiverSound installations and working bands need powerful wireless tools that can be set up quickly and used confidently. Shure's rugged SLX UHF Wireless Systems exceed these demands with innovative automatic setup features, such as auto frequency scan and transmitter setup, exceptional wireless clarity, and legendary Shure microphones. Supporting 20 compatible systems across multiple UHF frequency bands, SLX smoothly integrates into houses of worship, lecture halls, conference rooms, and mobile gear cases.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.The SLX2 Wireless Transmitter features a wide variety of industry-standard handheld vocal microphones. Options include the Beta 87A or C, Beta 58A, SM86, and the legendary SM58.The legendary Shure vocal mic is tuned to accentuate the warmth and clarity of lead and back-up vocals. Consistently the first choice of performers around the globe. The Shure SM58 is a unidirectional (cardioid) dynamic vocal microphone designed for professional vocal use in live performance, sound reinforcement, and studio recording.