Sold as 1 Each. Built-in microphone with a noise reduction audio processor. Plug and play, no drivers required. Supported OS: Windows 10/8.1/8/7/XP (32/64 bit) and Mac OS X 10.6 or later. 90 degree field of view. Full HD 1920x1080. Compatible with most video conferencing and video chat applications such as Zoom, Teams, and Skype. Adjustable focusing. Frame rate: 30FPS. Secure to laptop, desktop, or tripod. Input: USB 2.0 (3.0 compatible).