Feature: 1. [Coarse Micro Focusing Mechanism] Featuring a low hand coarse and fine coaxial focusing mechanism, with a 20mm coarse adjustment range and 0.002mm fine adjustment accuracy. 2. [Wide Voltage] Built in 85 to 240V wide voltage system and 1W LED cold light source, this microscope is suitable for various places and environments. 3. [High Clarity] Adopt condenser NA=1.25 with variable aperture, this microscope offers superb clarity, allowing for enhanced examination of samples. 4. [Large Mechanical Stage] With double layer mechanical stage, the area is 125mmx115mm and the travel range is 76mmx52mm, can clip slices. 5. [Wide Application] Suitable for livestock farming, medical and beauty institutions, educational institutions, this microscope is perfect for biological research, pathology, teaching, and professional research. Specification: Item Type: Binocular Microscope Material: Aluminum alloy Optical Magnification: 40-2500X Observation Tube: Hinge binocular Eyepiece: Wide angle eyepiece WF10X DIN18mm, WF25X 8m Objective: Flat field achromatic objective Objective Lens: 4/0.1 WD36.5mm 10/0.25 WD0.76mm 40/0.65 WD0.53mm 100/1.25 WD0.13mm (oil lens) Converter: Four hole conversion Operation Platform: Right hand low hand control in X and Y directions, platform area: Approx. 125x115mm/4.9x4.5in, movement range: Approx. 76x52mm/3x2in Coarse and Micro Focusing Mechanism: Coarse adjustment stroke 20mm, fine adjustment accuracy 0.002mm Condenser: N.A.=1.25, variable aperture Light Source: LED cold light source 1W Power Supply: 85-240V AC 50/60Hz. Package List: 2 x Eyepiece WF10X DIN18mm2 x Eyepiece WF25X1 x Microscope1 x Plug1 x Dust Cover1 x 5 Pack Biological Slices1 x Frosted Piece1 x Fuse Tube1 x Instructions