This Microphone Have 4 Style for you to choose. They can use forAKG,Shure,Sennheiserand3.5mm Extemal Lock. You can choose the one which you need. Before you choice,please confirm the connector is right for you. Microphone Main Features: This is an unidirection mini headband microphone designed for speeches,dramas and other vocal applications.With an elastic steel headband and light weight design,the headset is comfortable for wearing a long-time.It also features with aflexible gooseneck to help position the capsule in the perfect spot easily. Product Specification: Transducer: Condenser Directivity: Unidirection (Super Cardioid ) Sensitivity: -47dB 2dB Output impedance: 680 Working voltage: 1.0V-10V.DC Signal to noise ratio: >63dB Line length: 1.2m Products include: 1 x Headset Microphone 1 x Microphone Windproof Cotton