This binocular stereo microscope offers 20X & 30X widefield magnification powers. It comes with two pairs of eyepieces, 10X & 15X, and tungsten illumination. It is an ideal instrument for viewing collections of coins, stamps, meteorites, tektites, minerals, gems, fossils, insects, etc. It is a perfect tool for inspecting jewelry, watches, circuit board, biological specimens, dissection, and etc. Features: Fully Coated Optical System Sharp 3-D Image with High Resolution Built-in Upper Illumination System Manufactured under ISO 9002 Quality Control System Superior Instrument Easy to Operate Excellent One Year Factory Warranty Specifications: Head: upright binocular Magnification: 20X & 30X Eyepiece: wide field - WF10X and WF15X Stage: white plate Interpupilary Distance: 2-3/16" ~ 2-15/16"(55-75mm) Working Distance: 2-3/4"(70mm) Illumination: built-in light 3V/3W, tungsten bulb Packing List : One Monocular Microscope with Track Stand and Tungsten Light One Widefield 10X Eyepiece One Widefield 15X Eyepiece One White/Black Stage Plate One Dust Cover Shipping Weight: 3 lbs