This is a professional binocular compound LED microscope 40X-2000X. It comes with Siedentopf binocular head, reversed nosepiece, two pairs of widefield eyepieces, four DIN achromatic objectives, large double layer mechanical stage, 3W LED bright variable illumination. It's easy to replace the LED lamp by your own. You can add advanced accessories including darkfield condenser and phase contrast kit to upgrade your microscope. All lenses are made of high quality optical glass. The high resolution image in the field of view is crystal clear and will satisfy the demands of professionals. This binocular microscopy is designed for clinical examinations, veterinary offices, laboratories and college.