Product details:

ICOM SM-50: Microphone, Desktop, Integral Goose-neck Type, Single Element, Dynamic, Built-In Preamp, Push-To-Talk, 8-pin Round Connector, Each - ICOM SM-50 Desktop Microphones are unidirectional dynamic microphones designed for base station operation with select ICOM transceivers. These microphones cannot be used with non-ICOM transceivers since their electret elements require power that is supplied from the connected transceiver. SM-50 microphones feature Up-Down tuning on compatible ICOM transceivers. There is a switch for PTT, a PTT lock feature, and a low-cut switch that is available on the top of the base to cut out the low frequency components on input voice signals.On the bottom of the microphone base there is a gain adjustment. SM-50 microphone cables terminate to a standard ICOM 8 pin microphone plug. ICOM SM-50 Desktop Microphones are the most complete ham station desktop microphone console you'll ever own!