FEATURES Shure BLX Wireless Systems combine professional-quality sound with simple setup and an intuitive interface for legendary audio performance right out of the box. Precision-built and available in a variety of configurations, it’s the most accessible way to own the stage. Includes BLX4 single-channel receiver, BLX2/BETA58A handheld transmitter, microphone clip, power supply, 2 AA batteries, and user guide. BLX4 Single Channel Receiver The durable BLX4 features simple setup, intuitive controls, and microprocessor-controlled internal antenna diversity. One-touch QuickScan frequency selection quickly locates the best open frequency in case of interference. For use with BLX Wireless Systems. XLR and ¼" output connectors Two-color audio status indicator LED Green: Normal audio levels Red: Excessive audio levels (overload / clipping) BLX2/BETA58A Handheld Transmitter Compatible with Shure microphones trusted by musicians for decades, the BLX2 transmits wireless audio with professional clarity and reliability. Quick and easy receiver frequency matching Integrated microphone capsule design, featuring BETA58A Lightweight, rugged construction Up to 14 hours of continuous use (2AA batteries) Up to 300 feet (100m) transmission radius (line of sight) Color ID caps (available separately)