Sennheiser XSW 2-ME2 -- Flexible, rugged, all-in-one wireless system that includes a stationary receiver for quick set-up and hassle-free handling, as well as a lightweight bodypack transmitter and an unobtrusive clip-on microphone. Metal receiver housing and rackmount kit also included. This product page is for the XSW 2-ME2-A model, frequency band 548 to 572 MHz.