Feature: 1. 0-180° inclinable binocular head is standard outfit. 2. Objective lens 200mm & 250mm with fine micro-focusing adjustment knob (the range of adjusting: 20mm),if you need, you may select 250mm apo-achromatic objective lens. 3. Easily maneuverable optical head with tension control knobs and 2 handles (One front handle is option). The optical head can be stop at any position in the moving range. 4. Optical head can be folded up to the arm at highest position. In that way you will have a clear and free working area when you don't use microscope. 5. Built-in orange filter and green filter. You can select the filters by a knob located at the same place of the fiber optic cable with is connected to the back of optical head. 6. Infinity corrected optical system / coaxial illumination. Fiber optic illumination system with brightness adjustment knob. The knob is just over the optical head. It is very convenience to adjust the brightness. 7. Two 150W Halogen bulbs with through the lens coaxial lighting and "change on the fly" lamp selector. Should a lamp fail during an examination, this feature allows a quick change from one lamp to another resulting in an uninterrupted procedure. 8. A special switch is fitted into the arm. The lamp will keep "on" when the optical head moves in normal working range and the lamp will turn off automatically while the optical head moves out of normal working range.