D-AOI650 all-in-one HD measurement video microscope adopts an integrated design, and only one power cord is needed for the whole machine to power the camera, monitor and lamp; its resolution is 1920*1080, and the image is very clear. It comes with dual USB ports, which can be connected to a mouse and a U disk for storing photos. It adopts the objective lens encoding device, which can observe the magnification of the image in real time on the display. When the magnification is displayed, there is no need to select the calibration value, and the size of the observed object can be directly measured, and the measurement data is accurate.