Product Details Slx24 Descriptionslx Wireless System Includes Slx2 Handheld Transmitter And The Slx4 Diversity Receiver.Specificationsslx Wireless Systems Feature Shure'S Patented Audio Reference Companding For Crystal-Clear Sound Beyond The Limits Of Conventional Wireless Technology.Slx2/Sm58 With Sm58 Cardioid Microphonesm58® Vocal Microphone Legendary Shure Sm58® Vocal Microphone, Tuned To Accentuate The Warmth And Clarity Of Lead And Back-Up Vocals. Consistently The First Choice Of Performers Everywhere.Cardioid (Unidirectional) Dynamic Frequency Response: 50 To 15,000 Hz Legendary Shure Quality, Ruggedness And Reliabilityslx2 Handheld Transmitter Frequency Response: 50 To 15,000 Hz Automatic Transmitter Setup Backlit Lcd With Timeout Feature 518 - 782 Mhz Operating Range Frequency And Power Lockout 3-Segment Battery Fuel Gauge 2 Aa Batteries (Included) Provide 8 Hours Of Continuous Use 518 - 782 Mhz Operating Rangeslx-4 Receiverautomatic 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 Optional Logic Functionality For Software Echo Cancellation And Remote Battery Life Monitoring (Slx4L Only)