This Tan Provider Series PSE9 Earset Microphone with Detachable Cable with Sennheiser LEMO 3-Pin Connector is a low-profile, single-ear headworn microphone compatible with Sennheiser wireless transmitters. This PSE9 earset mic is built for exceptional sound quality around the popular PSL6 low-profile lavalier microphone. The PSE9 features an omnidirectional polar pickup pattern. It can be worn on the left- or right-side of the face and molded to fit any user.