Warranty: 90 Angulation: 180°​/​180° Up​/​Down and 160°​/​160° Channel: 3.2mm Diameter: 11.3mm Working Length:: 168cm This variable stiffness insertion tube is an innovation of the EVIS EXERA™ 160 series of video colonoscopes that provides greater maneuverability for the user and less discomfort for the patient. At the same time, it reduces the chances of looping and facilitates insertion beyond the splenic flexor muscle. Optical System Field of View 140º Direction of View Forward Depth of Field 3-100 mm Distal End Outer Diameter 11.3 mm Insertion Tube Outer Diameter 11.5 mm Bending Section Range of Distal End Bending Up 180º, Down 180º Right 160º, Left 160º Working Length 1680 mm Total Length 2005 mm Instrument Channel Inner Diameter 3.2 mm Minimum Visible Distance 5.0 mm Return Policy90 days warranty Return in case of manufacturing defects Return for incopatibility assumed by the buyer