Working Length 1500 mm Total Length 3500mm Outer Diameter of Insertion Tube ?0~12 mm Depth of Field 5~100 mm Direction of Observation Straightly Angle of View 110? Range of Tip Bending Up/Down/Left/Right 120? Light Source Halogen cold light source Display 15?CRT Professional Power Supply 220V 50Hz Output Video/S-Video System PAL Resolution 625 line