AV-JEFE AVL622 Professional Headset Microphone with Movable Boom with 3.5mm Locking Stereo Connector Great Quality Professional Headset Mic !!! Compatible with Sennheiser transmitters: Evolution Series, EW100, EW300, EW500, G2, G3, SK 1093 Super lightweight Detachable boom and can be used left/right side of the headset Extendable boom length; Boom can be moved up and down, left to right and rotate by 360 degree