The ICOM SM-6 is a unidirectional, electret microphone designed for base station operation with many Icom transceivers. (It cannot be used with non-Icom transceivers since the power is supplied from the connected transceiver). The SM-6 features a switch for PTT (push to talk) and also a lock feature.
There is a free-bending neck for convenient adjustment. On the bottom of the mic base there is an adjustment for Low to High. This mic is powered from the ICOM transceiver. The mic cables terminate to a standard ICOM 8 pin mic plug. This mic works with the 28, 78, 271, 275, 471, 475, 718, 745, 746, 746 Pro, 756, 756 Pro, 756 ProII, 775, 781, 900, 901, 970, 1275 and many others.