1. Built-in sound absorption microphone, your voice can be heard clearly in 10 meters. 2. Great quality and exquisite appearance. Designed for both laptop and desktop. 3. Auto white balance, auto color correction. Fixed focus, do not need to adjust lens. 4. pixels, high definition and true color images. Specialized optical lens, high precision. 5. With up and down 30 degrees rotation, you can adjust the angle according to your requirement.