Features: Light Weight designs, for long terms adorns. Comfortable & durable, perfect for all kinds of live performances & productions. 3.5mm Locking Screw Plug. This microphone is light weight. Wearing it for a long terms will not cause any fatigue. The microphone arm can be bend to adjust the position. Powerful, High sensitivity headworn microphone amplifies your voice, stable signal, no delay & crisp, vibrant sound transmission for indoor & outdoor activities. This Ergonomic, Light Weight and Flexible design is Perfect for Live Theater, University Professors, Guest Speakers, Video & Podcast Productions, Stage & Vocal Performances. Specifications: Materials: Metal and Silicones Size: As Shown in the Picture Connection plug: 3.5mm Male Plug Sensitivity: -40dB ± 2dB Directivity :Total directivity Sensitivity：-40±2dB Output lmpedance： ≤2.2kΩ Operating voltages: 2.0V Frequency response:20—20KHZ Signal to noise ratio: greater than 60dB Package Includes: 1pc Headset Headworn Microphone note: Please allow 1-2cm errors due to manual measurement, make sure that you not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color of the item.