Av-Jefes VH16C-H4P Ultra Lightweight Headset Microphone for Audio Technica Wireless Microphone Element : Back Electret Condenser with Polar Pattern : Unidirectional Designed for presentation/ speech use requiring minimum microphone visibility with hands-free operation RoHs and REACH Complied. Without Pb, Hg, Cd, Cr6+, PBB, PBDE. Ultra Light Weight, Bendable Boom for Comfortable Use Dual Sided Miking capabilityBoom can be positioned at left or right side of the headset frame