- Stereo zoom 6.5-45 X (90)
- Zoom ratio : 7
- Working distance:103 mm
- The range for adjusting the visual distance:52-75 mm
- The range for adjusting the diopter : 5
- The range for adjuring the focus : 35 mm
- Wide-angle eyepieces with high point
- Optic head and stand tilt to a more natural 40° viewing angle
- Three kinds of illumination fields
- Tungsten-halogen darkfield / brightfield illumination with sliding baffle
- Rheostart to vary darkfield / brightfield intensity
- Adjustable iris diaphragm to control width of light beam
- Fluorescent illumination simulates north daylight, ideal for diamond color grading
- Work normally in 90-230 V voltage range and the lamination is steady
- Built-in optical-fiber illumination system