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 0.7‑4.5X (10‑180X 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: 6.5:1 Working Distance: W.D.95mm/3.74in, bracket diameter Φ28mm/1.10inFine Focus: Focus on the C/CS base Iris Adjustment: High definition and high depth of field, large depth of field, with fine tuned manual aperture ring Standard Optional: 0.5X CCD adapter Length: 110mm/4.33in or 185mm/7.28in. Package List: 1 x C Mount Len1 x 50mm Ring Adapter1 x Hex Wrench