The rugged SLX Wireless Systems from Shure bring unparalleled ease of set-up and exceptional audio quality into reach. With included accessories, SLX is also installation-ready, out-of-the-box and with a wide selection of legendary Shure microphones to choose from, SLX offers a tailored solution for virtually any application. Wireless Microphone System SLX2/SM58 & SLX4 638-662MHz