Total magnification: 40X-100X-400X-1000X; Eyepieces: wide field WF10X; Objectives: achromatic DIN 4X, 10X, 40X(S), 100X(S, Oil); Viewing head: 45 degrees inclined 360 degrees swiveling binocular; Interpupillary distance: sliding adjustable 2-3/16inch ~ 2-15/16inch(55~75mm); Diopter: adjustable on both ocular eye tubes. Nosepiece: revolving quadruple; Stage: double layer X-Y mechanical stage with scales, size: 4-1/2inchx 4-15/16inch (115mm x 125mm), translation range: 2-13/16inch x 1-3/16inch (70mm x 30mm); Stage upward moving lock protects objectives and slides. Condenser: NA1.25 Abbe condenser with iris diaphragm; Illumination: transmitted (lower) LED light, intensity adjustable; Focus: Coaxial coarse and fine knobs on both sides. Full solid metal frame construction with stain resistant enamel finish; Power supply: AC/DC adapter, 7.5V/7.5W (UL approved) - Input: 100-240V.