Features: 1) Achromatic objectives: 4x, 10x, 40x (s), 100x (s, oil) 2) Wide field eyepiece: WF10x, WF16x 3) Compensation free binocular head: inclined at 30°, 360° rotatable 4) Inter-pupil distance: 55 - 75mm 5) Nosepiece: quadruple 6) Double layer mechanical stage: a) Size: 140 x 140mm b) Moving range: 75 x 45mm 7) Focusing: coaxial coarse and fine adjustment 8) Focusing range: 30mm 9) Focusing interval: 0.002mm 10) Illumination condenser: condenser NA= 1.20, 6V / 20W 11) Halogen lamp, with adjustable brightness 12) Power: AC input 110 / 220V, DC output 6V