Specifications: Model: AN6013-1 Mount: C-mount Focal Length: 55mm Aperture/F#: 6.3 Optical Configuration: 1 group 2 pieces Back Focal Length of Mechanical: 9.526 Image Format: 1/3" Pixels: Megapixel high-definition Focus: Manual Iris: Fixed Working Distance: 95mm-167mm Magnification: 0.4x-1.0x (about 10X-200X on the display) Visual field angle(mm)@0.4x: Diagonal: 15mm, Level: 12mm, Vertical: 9mm Visual field angle(mm)@1.0x: Diagonal: 6mm, Level: 4.8mm, Vertical: 3.6mm Item Size: approx.: 28*103mm (DIA*L) Item Weight: approx. 104g Package Information: Package Size: Approx. 15 * 8 * 3.5cm / 5.9 * 3.1 * 1.4in Package Weight: Approx. 106g / 3.7oz Features: *10X-200X Microscope C-mount zoom lens. Working distance: 95mm-167mm. *Magnification adjustable, power by 0.4X-1.0X(about 10X-200X on the display). *Mini design, compact, lightweight, easy to carry with and convenient to use. *Widely used for industrial purpose, circuit board, jeweler, watchmaker, medical science, education, etc. *The top has a dust cover design, which is opened when in use and closed after use to effectively isolate dust.