Av-jefes Avl63035 Professional Mini Headset Mic w/ 3.5mm Screw Lock for Sennheiser Wireless Microphone Compatible with Sennheiser transmitters: Evolution Series, EW100, EW300, EW500, G1,G2, G3, SK1093,SK20,SK300 Super Lightweight! Extremely flexible and easily adjust to fit over the ear of any user. High quality voice/sound pickup. RoHs and REACH Complied. Without Pb, Hg, Cd, Cr6+, PBB, PBDE. Great for lecturers, preachers, sportscasters, surveillance, stage performers.