Olympus GIF-H180 Video Gastroscope gives the best possible HDTV image quality and improves diagnostic imaging, enabling you to confidently observe capillaries and delicate mucosal tissue. Olympus GIF-H180 Video Gastroscope Evis Exera II High Definition Video Gastroscope with 9.8mm diameter, 2.8mm channel, 140° field of view, 103cm working length and angulation of 210°/90° (up/down) and 100°/100° (left/right).