The S-version of the e 845 comes with a noiseless on/off switch. Features Dynamic super-cardioid microphone for speech and vocals Extended high frequency range Consistent sound quality (varying distances, moving off axis) Handles high sound pressure levels Optional silent on/off switch Isolates handling noise, hum compensating coil Excellent feedback rejection Rugged metal housing Connector Type: 3 Way XLR. Directivity: Super Cardioid. External Length / Height: 185mm. External Width: 46mm. Frequency Response Max: 16kHz.