Feature:1. Adjustable: Users can choose according to the different needs of objective lenses and eyepieces, working distance, field of view, depth of field, etc.2. High Performance: 3D images with high definition, high depth of field, flexible zoom barrel, and many more features.3. Applicable: The lens can be easily connected to a variety of microscope light sources, such as round fluorescent lamps, LED ring lights, fiber optic cold light sources.4. Specification: Lens with front and side windows, 2 reflectors magnifying items side zoom lens 0.5X C mount adapter, objective magnification 0.74.5X (10180X on the monitor).5. Parameter: The working distance is W.D.95mm, and it supports high definition and high depth of field, large depth of field, and a fine tuned manual aperture ring.Specification:Item Type: C Mount LenMaterial: MetalObjective Magnification: 0.7-4.5X (about 10-180X on display)Magnification: 6.5:1Working Distance: W.D.95mm/3.74in, bracket diameter 28mm/1.10inFine Focus: Focus on the C/CS baseIris Adjustment: High definition and high depth of field, large depth of field, with fine tuned manual aperture ringStandard Optional: 0.5X CCD adapterLength: 110mm/4.33in or 185mm/7.28in.Package List:1 xC Mount Len1 x 50mm Ring Adapter1 x Hex Wrench