The XSW 1-825-A UHF Vocal Set with e825 Dynamic Microphone from Sennheiser is an easy to use all-in-one wireless system for singers and presenters. It can be used to capture audio for live sound, stage, and theater applications. The set includes an intuitive stationary receiver for quick set-up and hassle-free handling, as well as a vocal microphone and microphone clamp. It is built with antenna-switching diversity reception and features automatic frequency management and synchronization via remote channel. Up to 10 compatible channels are available. Additionally, an AC power adapter and two AA batteries are also included.