Compatible with Sennheiser Evolution Series, G2, X2 Digital Wireless Systems * Professional vocal pickup condenser microphone * Double earhook with 3.5mm Screw Locking Jack Plug & 2pcs of windshields * Sweat and Dust-Proof Made Primarily for Indoor and Outdoor professionals * Designed for Use on Stage, Houses of Worship, Presenters, Lecturers and Other Applications Requiring Minimum Microphone Visibility with hand-free Operation