Total magnification: 40X-80X-100X-200X-400X-800X-1000X-2000X; Eyepieces: wide field WF10X/18 and WF20X; Objectives: achromatic DIN 4X, 10X, 40X(S), 100X(S, Oil); Viewing head: 45 degrees inclined 360 degrees swiveling digital binocular head; Interpapillary 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. Black palm rest on the base; Illumination: transmitted (lower), replaceable 3W LED light, variable intensity; Metal framework; Power supply: AC 100V~240V 0. 2/0. 1A 50/60Hz worldwide range (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 XP/Vista/7/8/10, and Mac OS. 5-year against manufacturing defects.