ELP 1080x960 Hd 2.8-12mm Varifocal Lens USB Webcam for Video Conference 1.3Megapixel HD USB 2.0 Webcam 2.8-12MM Megapixel HD Varifocal Lens MJPEG&YUY2 Compression format optional AR0130 professional image sensor Good to use in video conference system or smart machine system