OMAX 40X-2500X USB3 18MP Digital Trinocular Compound LED Lab Microscope with Aluminum Carrying Case Total magnification: 40X-100X-250X-400X-1000X-2500X; Eyepieces: widefield WF10X/18 and WF25X; Objectives: achromatic DIN 4X, 10X, 40X (S), 100X (S, Oil); Viewing head: 45 degrees inclined 360 degrees swiveling trinocular; Interpupillary distance: sliding adjustable 2-3/16inch ~ 2-15/16inch (55mm ~ 75mm); Diopter: adjustable on both eyepiece tubes; Nosepiece: revolving quadruple Stage: mechanical stain-resistant double layer, size: 5-1/2inch x 5-1/2inch (140mm x 140mm), translation range: 3inch x 2inch (75mm x 50mm); Photo tube adjustment range: 5/8inch (15mm); Focus: coaxial coarse and fine focus knobs on both sides, rack and pinion adjustment, with tension control; Focusing knob can be locked for observation and transportation; Condenser and diaphragm: Abbe NA1.25 rack and pinion adjustment condenser with iris aperture diaphragm Black palm rest on the base; Illumination: transmitted (lower), replaceable 3W LED light, variable intensity; Metal mechanical components; Power supply: 100V~240V 50/60Hz worldwide range (US and Canada power plug); Carrying case: aluminum Digital camera: - true color 4912x3684 pixels (18M pixels) - Super speed USB 3.0 connection - 0.5X reduction lens to get larger field of view - 0.01 mm calibration slide: 1mm/100 division - Frame speed: 5.6fps at 4912x3684, 18.1fps at 2456x1842, 32.2fps at 1228x922 - Software compatible with Windows, Mac OS X and Linux operating systems - Capturing microscope images, recording live video, measuring lengths, angles, areas, editing images - USB3 cable included 5-year warranty against manufacturing defects