This is a binocular 10X and 20X stereo microscope on boom-arm with goose-neck LED light providing clear sharp images. It comes with a binocular head widefield eyepieces a boom-arm stand and a goose-neck LED light. The 45 degree inclined eye tubes and rubber eyeguards ensure an easy observation. The boom-arm stand allows you to turn the microscope head around two different axis (X and Z). This microscope offers high resolution widefield of view and extremely large working distance (9 inch). The flexible goose-neck light shines down onto objects for the observation of surface details and fine structures. This microscope is perfect for circuit board repairing soldering and dental applications. Features: 10X and 20X magnification powers Adjustable interpupillary distance (50 mm -77 mm) Cast steel stand finished with stain resistant enamel All Metal Mechanical Components Rubber eye-guards included Eyepieces: 30.5 mm widefield WF10X and WF20X Illumination: 1W LED Power Supply: 110V/60Hz Accessories: eye-guards Brand: AmScope Model: SE400-Z Color: White/Black Magnification: 10X and 20X widefield stereo magnification powers Objective diameter: 1X Eye relief: Accurate alignment ensuring a fatigue-free long time viewing Lens coating: Fully Coated Optical System Requires batteries: No Body material: Metal/Alloy Weight: 15 Pounds Dimensions: 8 inches high x 16 inches x 17 inches deep