Features: brand new and high quality Offers crystal clear voice capture on meetings calls, great noise reduction technology. Plug and Play-USB free driver, plug and for play, the microphone can pick up sound from 360 degrees Omni directions.. The microphone can catch the slightest 360 signal, make sound clearer and smooth like talking face to face. Compact portable design it stays perfectly on the conference room table without taking too much space. Widely application: Online meeting,business conference and negotiation,video/audio chat,call,gaming and more. Specifications: Material: Zinc Alloy+Metal Mesh Cover Frequency Response Range: 100hz-16000hz Sensitivity: -40 3dB Signal to Noise Ratio > 58db Interface: 3.5mm AUX Size: 70x15mm/2.75x0.59 inches Approx. Package Includes: 1xOmni-directional Microphone note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid.