Total magnification for brightfield: 40X-80X-100X-200X-400X-800X-1000X-2000X; Total magnification for phase contrast: 100X-200X-400X-800X-1000X-2000X; Eyepieces: widefield WF10X/18 and WF20X; Brightfield objectives: achromatic DIN 4X, 10X, 40X (S), 100X (S, Oil); Phase contrast objectives (in phase contrast kit): achromatic PH10X, PH40X (S), PH100X (S, Oil); Viewing head: 45 degrees inclined 360 degrees swiveling digital binocular head * 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); 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; Phase contrast condenser: NA1.25 (37mm mounting size) condenser, one centering telescopic eyepiece with three separated condenser annular plates for 10X, 40X, and 100X, each can be centered individually; Black palm rest on the base; Illumination: transmitted (lower), replaceable 3W LED light, variable intensity; Metal framework; Power supply: AC 100V-240V (US and Canada plug) * Built-in digital camera: - Imaging device: 3.0 mega pixels, 1/2.5inch CMOS - Effective pixels: 2048x1536 - Maximum still image resolution: 2048x1536 pixels - Frame rate: 4 frames per second at 2048x1536, 10 frames per second at 1024x768 - Interface: USB2.0 ( 480MB/second) - SNR: >40dB - Software compatible with Windows 2000/XP/Vista/Windows 7 32/64-bit, and Mac OS * 5-year warranty against manufacturing defects