This professional binocular microscope comes with a binocular sliding head, rack and pinion Abbe condenser with iris diaphragm, a dry darkfield condenser, and double layer mechanical stage. This microscope is designed for teaching demonstration, clinical examination and research purpose. It offers eight levels of magnification: 40X, 80X, 100X, 200X, 400X, 800X, 1000X and 2000X. The included Plan 100X objective lens with built-in iris allows you to vary the effective aperture during darkfield observation, for fine-tuning the field's darkness. This microscope is a perfect instrument for vets, college students, and those in clinic offices and biological labs. It comes brand new in factory sealed box. Its retail value is above $1,400.