MZ61 is characterized by long working distance, excellent image flatness, wide field, easy operation etc. MZ61 series zoom stereo microscope with erect image, horizontal focusing knobs. It required 220 VAC. The interpupillary distance between the microscope eye tubes, adjusts from 55mm to 75mm to fit each user. Viewing head 45 Inclined, 360 Rotatable binocular head or trinocular head. Zoom objective magnification 0.7X to 4.5X. It has best quality solid manufacture. Certificated under ISO 9001 Standards. Scope sells for hundreds more in several science catalogs. Power. It has economical price.