Pro Lavalier Lapel Microphone Microdot 6013SRB For SENNHEISER Wireless Transmitter - Unidirectional Condenser Mic Professional vocal pickup condenser microphone 3.6-foot cord for added convenience; Weighs only 15 grams 3.5mm Screw Locking Jack Plug For Sennheiser Wireless 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