By far the best USB microscope I ever tried.
The led lights are quite white, without significant yellow or bluish tones, and their regulation is unusually smooth.
By adjusting the vertical position of the microscope and its focus ring it is possible to arrange for different magnification ratios.
Unfortunately, the vertical positioning system and the microscope mount have too much play and can make the adjustment operation difficult, particularly at higher magnifications. Moreover the microscope mount is too easy to tilt by simply bumping into it or pulling the USB cable. These parts will need to be revisited and corrected.
The CD-ROM includes usage, maintenance, and troubleshooting manuals in PDF, and a software for Windows.
Actually, there is no need to use the included software, as the microscope is a regular USB camera and can be used with whatever imaging application.
The microscope is not particularly fast, and image loading at higher resolution is jerky, it is advisable to focus at 640x480 resolution and then switch to more detail.