Review of the Woehrsh Compound Binocular Microscope, 40X-2000X, Double Layer Mechanical Stress Table and LED Illumination Microscope for Adults, Student Laboratory and Adult Microscope This is a much better microscope than the monocular I had over 50 years ago. Precise control of slide/sample positioning is a real advantage when using a microscope. You place the slide on the fixed side, close the spring-loaded clip on the slide, and turn the two-dimensional motion control knobs (front-to-back and side-to-side) to bring the specimen on the slide into view. This feature is one of the reasons why it's a bit more expensive than comparable options that don't have this feature. This is a neat feature, and beats trying to center the sample by moving the slide with your fingers (the less you have to touch the glass, the better). The better professional microscopes move the entire stage as well as the slide, but this works well. The scope has two light sources, one above the stage and one below the stage. Both are independently adjustable in on/off and brightness. These are LED lights and can be battery operated or connected to a USB power source or USB adapter. There is no mirror light option. The lamps should be interchangeable if necessary. The optics are good. The calculated magnification is correct, 40-2000x. The 2000x magnification setting (the 40x lens and WF 50x eyepiece) is surprisingly not bad. At higher magnification the sample appears darker and less clearly resolved, better views at 500x magnification. I like the WF eyepieces best and I plan to supplement the supplied eyepieces with a pair of WF 20x or WF 25x with one of them dioptic (adjustable) so I can adjust it to the visual differences of my two eyes. This is a disadvantage of the optics that come with this scope. You can adjust the interpupillary distance, but not optical differences in your eyesight. This is typical for riflescopes in this price range. The fact that there is no eyepiece in the 20x range is an opportunity to fix this problem and add a magnification range. Overall quite nice, as I said, much better than the microscope I had years ago and also better than the ones I used in high school years ago. My star rating is based on this statement in the description: "It is suitable for student education, a gift for children, elementary science exploration and DIY experiments." For these purposes, this scope is ideal. See attached photo of a pre-made slide of a honey bee knee taken with my phone through the microscope at 10x and WF 50x settings.