Length: 4 inches Warranty: 90 days Angulation: up​/​down 180º, right​/​left 160º Channel: 3.7 mm Diameter: 12.9 mm Field Of View: 140º Working Length:: 1680 mm Field of View 140º Direction of View Forward Depth of Field 5-100 mm Distal End Outer Diameter 12.9 mm Insertion Tube Outer Diameter 12.9 mm Bending Section Range of Distal End Bending up​/​down 180º, right​/​left 160º Working Length 1680 mm Total Length 1980 mm Instrument Channel Inner Diameter 3.7 mm Return Policy90 days warranty Return in case of manufacturing defects Return for incopatibility assumed by the buyer