Full digital camera system, 4K ultra-high definition image sensor, output pixel ≥ 8 million pixels, horizontal resolution ≥ 1800 lines, frame rate 3840x2160, 60p, 4K and full HD output at the same time, with a variety of 4K and full HD output interfaces, meeting the needs of multiple displays in hospitals. The camera handle has four programmable keys, which can be equipped with functions such as photographing, video recording, white balance, freezing, zooming in and out, etc. the host has a built-in USB storage function, which can capture pictures and videos, and a built-in 80W LED cold light source; 4K special variable focus bayonet f14-32, which can connect multiple brands of hard mirrors, and is equipped with independently developed workstation software, which can be customized according to different needs of customers