Warranty: 90 Superior image quality and wider field of view: The GIF-XP190N features full-screen image quality, enhanced Narrow Band Imaging (NBI) with significantly increased brightness, and a wider field of view (140°) compared to previous generations. Two light guides provide noticeably better illumination than previous generations. Ultra-slim insertion tube: With its superior imaging capabilities and wide field of view, the slim GIF-XP190N is an ideal tool for diagnosis via the transnasal route or for use in patients with esophageal strictures. And a larger 2.2 mm channel provides better suction and more device compatibility. Field of vision 140º visual direction 0º Depth of field from 3 to 100 mm Distal end outer diameter 5.4 mm Insertion tube outer diameter 5.8 mm Working length 1100mm Inner diameter of the channel 2.2 mm Minimum visible distance 3.0 mm from the end distal Return Policy90 days warranty Return in case of manufacturing defects Return for incopatibility assumed by the buyer