When the light source is insufficient, the light roller next to the screen can be adjusted to control the intensity of the LED supply light; Optimize test results. Compared with other microscopes, the continuous zoom digital microscope has a wide observation range. The adjustable angle bracket not only reduces the problem of object reflection, but also facilitates the of maintenance tools such as tweezers and electrochromic iron. Insert a 32GB memory card to take photos of test results and share videos with other devices. The electronic display screen is easy to use,