The Shure Wireless Microphone consists of the SLX2 handheld transmitter with the Beta 58A Dynamic Supercardioid Microphone. The Shure SLX2 Handheld Transmitter includes timed backlit LCD display, frequency and power lockout, and "Mute" functionality. The SLX2 transmitter design allows for interchangeable microphone cartridges. The Beta 58A microphone accentuates the warmth and clarity of lead and backup vocals. Its supercardioid design provides maximum isolation from other onstage sounds.