Shure BLX2/SM58 Handheld Wireless Transmitter (H11 Band - 572-596 MHz)Making the jump to wireless should be liberating, not challenging. 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 and available in a variety of handheld, lavalier, instrument and headset configurations, it's the most accessible way to own the stage. Features: Power and battery status LED Adjustable gain control Quick & easy