I use this one https://www.amazon.com/Microscope-50-1000X-Magnification-Wireless-Adjustable/dp/B081L4Y98G/ref=sr_1_6?dchild=1&keywords=1080p+digital+microscope&qid=1626225710&sr=8-6 Here is one of my vids with the microscope https://youtu.be/9jT-q97erXQ

Hi! My friend and I are developing a compact digital microscope that is equivalent to ~200X microscope (real magnification number, not fake). It can live-stream the microscopic imaging to your phone and is good for observing e.g. ciliates when you are outside in nature. We plan to price it at ~$200. Maybe you would be interested? https://www.eurekamicroscope.com/

I think I can partially answer the question by giving some considerations to think about. · I use these on a regular basis, being it in the field of life sciences. Judging from your post, you're an electronics repair man. · From personal experience: when you have to use a stereo microscope for hours in a row, you definitly want a binocular with eyepiece tubes placed at 45°. They're more expensive, but really worth it, unless you don't mind your neck and/or your back feeling like shredded each evening... · Depending on brand and model, those instruments can magnify anything between 5 x and some 150 x. In biology, and I suppose that goes for your line of work as well, magnifications above say 40 x are only rarely used. And even in an excellent instruments, the image quality deteriorates quickly above that magnification. Unless you want to pay $ 10,000 or even more. · There are two types of stereo microscopes: the Greenough (GR) type and the CMO ("Common Main Objective"). · Both have their (dis)advantages. The CMO has greater light gathering power (more light in the image) but the GR can easily compensate that by the use of a stronger light source. · The CMO is in the literature explicitly advised as "the workhorse" for "electronics repair" and such, but it is 2 - 3 x more expensive than an equivalent GR. A lot of CMO's are equipped with a zoom function. It can come handy, I suppose. · If you have every once in a while some other, larger repair work, such as computer mother boards and such, you might want to consider a stereo microscope mounted on a boom stand, giving you more work space. · Field of view might be a consideration: a larger FOV is always handy. As a general rule, CMO's have larger FOV's compared to GR's. But there are exceptions. · Working distance might be a consideration. Some have far greater working distance than others. · Illumination might be a consideration. In their basic version binocular microscopes are usually equipped with a single low voltage illuminator, which often leaves much to desire. Better illumination such as an adaptable ring illuminator or (luxury!) a fiber optic illuminator are expensive options. · Regarding brands and models, I can't really give much of an advice, not being an expert on stereo microscopes. I used only two of those: a CMO, the Russian LOMO MBS-10 which I considered usable but nothing more than that and a GR, a 1970's - 1980's Zeiss STEMI DR, which is better than the LOMO, but not as good as the brand suggests.