The Fujinon D5 double-channel gastroscope has a distal end diameter of only 11.5 mm, yet the unit contains two large forceps channels, measuring 3.8mm and 2.8mm, making the D5 ideal for endoscopic mucosal resection and therapeutic procedures. the forward water jet function incorporated into the device enables ease in dye spraying and washing of lesions during the course of chromoendoscopy procedures.