Shure BLX Wireless Systems combine professional quality sound with simple setup and an intuitive interface, for performance you can trust right out of the box. Precision built, easy to use and built to last, it's the most accessible way to own the stage. Shure BLX Wireless Systems combines professional-quality sound with simple setup and an intuitive interface for legendary audio performance, gig after gig. Includes: BLX4 Single-Channel Receiver BLX2/PG58 Handheld Transmitter Microphone Clip PS24 Power Supply 2 AA Batteries WA371 Swivel Adapter 31B1856 Thread Adapter User Guide   BLX4 Single-Channel Receiver Up to 12 compatible systems per frequency band (region dependent) Microprocessor-controlled internal antenna diversity One-touch QuickScan frequency selection quickly locates the best frequency 1/4" and XLR audio outputs Two color audio status indicator LED BLX2/PG58 Handheld Transmitter Professional-quality PG-58 microphone capsule for lead and backup vocal performance applications Power and battery status LED Adjustable gain control Quick and easy frequency matching 2 AA batteries (included) provide up to 14 hours of continuous use 300 feet (91 m) operating range (line of sight) Compatible with Shure microphones trusted by musicians for decades, including the legendary SM58, the BLX2 transmits wireless audio with professional clarity and reliability For use with BLX Wireless Systems Get your Shure BLX24/PG58 Handheld Wireless System (H10 Band) today at the guaranteed lowest price from Sam Ash with our 45-day return and 60-day price protection policy. FCC Consumer Alert (U.S.) Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC?s wireless microphone website at . ?? This item is guaranteed to be in "as new" condition and has virtually no cosmetic imperfections.