Features: Offers crystal clear voice capture on meetings calls, great noise reduction technology. The conference microphone with mute button,quickly mute/unmute by one press of the mute button. 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: Best Using Range: 3-5m Input: 5V/500mA Material: ABS Packing Size: 10x10cm/3.93x3.93inches Package Includes: 1xUSB Conference Microphone 1xUSB cable 1xUser manual note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid.