The VOYAGER C40 from MEDIT INC is a Borescope with Depth of Field(DOF) 5 to 80 mm, Field of View(FOV) 85 Degree, 120 Degree, Operating Temperature -10 to 50 Degree C, Storage Temperature -20 to 60 Degree C, Probe / Insertion Tube Diameter 2 to 6 mm. More details for VOYAGER C40 can be seen below.