Feature:1. Applicable Model: C Mount Lens, 120X zoom, adjustable magnification, suitable for high definition multimedia interface USB industrial video microscope camera.2. Adjustable Magnification: The objective lens magnification is 0.74.5x (about 10120X 180X or 300X on the monitor), the zoom ratio is 6.5:1.3. Clear Images: Objective lens adopts anti reflection coating, high refractive index, bright and clear imaging. The working distance is 90mm180mm / 3.547.09in.4. Large Field of View: Standard interface, universal for stereo microscope, large field of view open, giving you more comfortable viewing experience.5. Easy to Install: The microscope camera c mount lens is easy to install on the microscope and observe the internal structure of the object.Specification:Item Type: C Mount LensMaterial: Metal120X Function:Working Distance: Approx. 90mm-180mm / 3.54-7.09inC Mount Zoom Lens0.35X C mount adapterZoom Ratio: 6.5:1Objective Magnification: 0.7-4.5X (approx. 10-120X 180X or 300X on monitor).Package List:1 xC Mount LensNote:1. The working distances described in the details are for reference only.2. Cameras with these lenses will work at different distances due to the size of the sensor