Magnification range: 40X-1000X Eyepiece tube: Seidentofp type Binocular, 30癷nclined;Diopter adjustment; Interpupilary distance adjustment: 55-75mm Nosepiece: Quadruple click-stop, revolving mechanism with multiple ball bearings Eyepiece lens: WF 10X eyepiece Coarse and fine focusing: Coaxial coarse/fine focusing with cross roller guide incorporated; Mechanical stage: Double-plate system stage with Removable slide holder; Stage size 125 (W) x 120 (D) mm; Travel area 70 (X) x 30 (Y) mm with a right-hand stage handle; Focusing range: 20mmFocusing interval: 0.002mm Condenser: Abbe type N.A. 1.25 condenser with iris and diaphram & filter Objective lenses: Achromat 4X, N.A. 0.10 Achromat 10X, N.A. 0.25 Achromat 40X, N.A. 0.65, spring loaded Achromat 100X oil, N.A.1.25, spring loaded Illumination: Halogen 6V-20W, 220V / 110VBuilt-in Illuminator systemAdjustable brightness Standard accessory: 6V-30W spare halogen lmp ---1pcs BGX1-20(0.5A) fuse ---2pcs Blue ground glass filter---1pc immersion---1 bottleDust cover --- 1pc Optional accessories: Eyepiece: WF16X, WF20XObjective: 60X(S), 20X