RF4 RF-7050 7-50X Zoom Binocular Microscope Features: 1. 7-50X optical continuous zoom objective lens, the total magnification, reaches 7X-50X, standard working distance up to 100mm 2. Giving dust-proof, oil-proof, temperature lens, prevent eyepiece pollution, safe and durable 3. The eyepiece visual field reflection adjustment, giving dust-proof, oil-proof, high-temperature lens, prevents eyepiece pollution, safe and durable 4. Both eyepieces support refractive adjustment, suitable for people with different eye distances 5. 7-50x continuous zoom, optical system, large magnification continuous zoom imaging, sharp without distortion, can correctly dock concave and convex objects to get full three-dimensional images 6. HD coated dust mirror, effectively prevents dust, smoke, oil pollution from entering the internal image blurs, ensuring good light transmittance without affecting imaging Specification: 1. Magnification: Continuous zoom 7X to 50X 2. Head: 45-degree inclined 360-degree swiveling trinocular 3. Eyepiece: WF10X22MM adjustable 4. Objective: 0.7-5.0X 5. Zoom Knob: Metal knob 7 gear zoom