Features: 1 Multi function design, assistant binocular can be located at 90° or 180° against main binocular tube, suitable for Skeleton & Hand & Orthopedics & Ophthalmic Surgery. 2 Manual 3-step objective changer 3 High resolution, high clear optic system 4 Excellent depth of field 5 High illumination 6 Main & Assistant microscopes are same magnification 7 Video and Photo accessories are option.