The Sennheiser SK XSW is an easy-to-use bodypack wireless transmitter. A host of useful parameters are directly accessible from the bodypack and they include a battery life indicator, mute function, squelch threshold, and more. The audio input accommodates both condenser mics and instruments (microphones and instrument cables sold separately). The SK XSW's sweat-resistant design makes it a durable, road-ready wireless solution.