Zeiss OPMI CS on NC31 Stand The superior CS optical package on a stand that offers a somewhat advanced degree of flexibility than the NC-1 or the NC-2. The Opmi CS/NC31 is an ideal option for Spine Surgery. Compared to it’s original retail price, this is a tremendous value. It includes standard face to face optics with a powerful Xenon lightsource similar to newer models. Features: Excellent Maneuverability and Reach Powerful, Brilliant Light Source Zeiss Opmi CS/NC optics 2 Each 0-180 Degree Inclinable Binoculars Face to Face Bridge SuperLux 300W Xenon Light Source Halogen Back-up NC31 Floorstand Hand Grip Controls