This is a trinocular stereo microscope with a 144-LED compact ring light with a built-in dimmer. The microscope has a super widefield optical system that provides a large zoom magnification power (26:1) and a large working distance (8 200mm). The trinocular port uses the third port for camera capabilities or a third party to view as well giving you the remaining two ports to view your specimen. The 144-LED ring light has a compact design with a built-in dimmer providing cool even and bright LED illumination. This microscopy system is an ideal instrument for manufacturing engineers lab technicians gemologists circuit board inspectors and anyone in electronic and semiconductor industries. It is also the right microscope for biological laboratory applications that require low heat release. This microscope is in a factory sealed box with a retail value over $1 500. Features: A perfect stereo inspection microscope with a 144-LED compact ring light and built-in dimmer Variable cool even and bright 144-LED ring illumination 3.5X-45X super wide zoom magnification power 8 (200mm) extremely large working distance High resolution with great flatness and contrast giving sharp and clear images Trinocular head with 45-degree inclined 360-degree swiveling eye tubes The trinocular port enables the easy use of camera capabilities 30mm super widefield high-eyepoint eyepieces with 20 mm field of view Sharp stereo erect images with a wide field of view Crystal clear original true color microscope images Dual eye tubes with adjustable diopters Sturdy all-metal table stand Accurate alignment reduces eye strain for longer periods of viewing Full optical glass elements Precise ground glass lenses Full metal chrome-plated mechanical components Adjustable interpupillary distance Rubber eyeguards included Manufactured under ISO 9001 quality control standard Five (5) year manufacturer warranty for microscope Unbeatable low price for the same guarantee or the difference back! Satisfaction guaranteed or your money back! Specifications: Head: 360 degree rotatable 45 degree inclined trinocular Eyepiece: 30mm super widefield high-eyepoint WH10X/20MM Barlow Lens: 0.5X Zoom Range: 0.7X-4.5X Diopter Adjustment: +/- 5dp Interpupillary Distance: 2-3/16 - 2-15/16 (55-75mm) Working Distance: 8 (200mm) Widefield View: 2-1/2 (65mm) super widefield Illumination: 144-LED compact ring light Power Input: 110-240V 50-60HZ automatic switching Stand: 10 x 7-7/8 x 10.75 (254 x 200 x 275mm) Round Plate: 3-3/4 (95mm) in diameter Accessories: a pair of eye-guards Packing List: One Trinocular Stereo Zoom Head One Pair of Super Widefield 10X Eyepieces One 0.5X Barlow Lens One 144-LED Compact Ring Light One Pillar Table Stand One Focusing Rack One Round Plastic Plate One Pair of Eye-Guards One Pair of Clips One Dust Cover User s Manual Package Dimension: 17 x 14 x 14.5 Shipping Weight: 20 lbs