Fangrui Product Details Description: ZOOM C Mount Lens is mainly used in the following fields: Machine vision microscopic inspection Industrial testing, especially electronic component testing scientific research Education industry. 1X-130X Zoom C-mount Lens: Work distance: 40mm-170mm Zoom ratios: 1: 17 Magnification Power by 0.1-1.3X (about 1 - 130X on the display) view field of Max multiple: 8mmx4.5mm view field of Min multiple: 40mmx33mm Eyepiece lense: 0.5X Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please dont mind. And take a consideration before place the order if you have request for color or appearance. Material: Metal colour: Black Package Contents: 1 x 130X short Lens Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3c