AmScope SM-3B-FRL Professional Binocular Stereo Zoom Microscope, WH10x Eyepieces, 7X-45X Magnification, 0.7X-4.5X Zoom Objective, 8W Fluorescent Ring Light, Single-Arm Boom Stand, 110V-120V Professional stereo microscope with boom stand has long working distance to enable users to perform work or manipulate large items, including circuit boards and dental appliances Binocular viewing head with pair of 10x super-widefield eyepieces, adjustable interpupillary distance, fixed 45-degree vertical inclination to reduce eye and neck strain, and 360-degree rotation capability to enable sharing 0.7x-4.5x zoom objective provides continuous zoom magnification and longer focal length for inspecting large-scale specimens Removable 8W fluorescent ring in a plastic housing provides bright, shadow-free illumination Single boom arm with 8" vertical working distance and adjustable 16" boom arm enables users to adjust the microscope on the X- and Y-axes