Sennheiser XSW 1-ME3 -- Wireless headmic set offering hands-free performance with an easy-to-use all-in-one wireless system. Set includes an intuitive stationary receiver for quick setup and hassle-free handling, as well as a compact bodypack transmitter and a lightweight headset microphone. This product page is for the XSW 1-ME3-A model, frequency band 548 to 572 MHz.