zuki, no, my version is not wireless, there is no transmitter. The mic comes with a connector that clips on your belt, it also has an on/off switch. You connect an xlr cable from there to the mic input on your keyboard.
It was the least expensive way of doing it, I really do not need wireless while playing the keyboard.
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Graham, Korg Pa1000, Korg G1 Air, Countryman E6, Roland BA330, 2 x Roland CM-30, , Mackie SRM150