The Sennheiser XSW 1-825-B is an easy-to-use wireless vocal set for singers, presenters, bands and small venues. It combines a stationary receiver with a handheld transmitter fitted with Sennheiser's evolution e 825 dynamic cardioid capsule, plus a microphone clamp. Setup is quick: automatic frequency management and synchronisation link transmitter and receiver at the touch of a button. This B-range version operates in 614 - 638 MHz with up to 10 compatible channels. The receiver uses antenna-switching diversity with integrated antennas and has a balanced XLR output (+12 dBu) and an unbalanced 6.3 mm jack output (+6 dBu), switchable between line and mic level. Audio frequency response is 50 - 16,000 Hz and signal-to-noise ratio at least 103 dB(A). The handheld runs approximately 10 hours on two AA batteries, which are supplied. The receiver measures approximately 200 x 42 x 127 mm. It is a good step up from wired microphones for live vocals, speeches and small events.