Smooth focus control and a fluid 8x Greenough zoom system guarantee stress free operation with minimal ware and tare to gears, Excellent Image Quality & Optical Performance with infinity Parallel Opitacal System. Comfortable Operation with Ergonomic Design Principle with LED light for both incident and transmitted illumination, Providing even illustration and life expectancy can reach 6000 hours. A Wide Range of Accessories to be Equipped with the Microscope for Multi-purpose. It is An Outstanding Assistant in Industrial, Medical and Scientific Research Areas..