Av Jefes Vl630_ta3 Mini Headset Microphone for Akg, Samson Sweat and Dust-Proof Made Primarily for Indoor and Outdoor professionals Designed for Use on Stage, Houses of Worship, Lecturers and Other Applications Requiring Minimum Microphone Visibility with hand-free Operation Compatible with Samson transmitters: AL-300, CT3, CT7, VT2L, UT1L, T32 Compatible with AKG Transmitters: PT40, PT45, PT60, PT61, PT80, PT81, PT400, PT450, PT2000, PT4000, WMS, DPT RoHs and REACH Complied. Without Pb, Hg, Cd, Cr6+, PBB, PBDE.