The BLX24/SM58-K3E has made the industrys favourite microphone wireless. Get all the quality you expect from an SM58. Iconic sound. Tour-tough construction. But now youre truly free when you perform. Built to ensure rock solid signal from transmitter to receiver. Shure BLX Wireless Systems eliminate interference and drop-outs. And thanks to one-touch Quickscan technology all the hard work is done for you. Locating the best frequency for your performance is as easy as pushing a button. No trial and error. No complicated set up. Just one press.