The IV9635X1N from Olympus Corporation is a Borescope with Depth of Field(DOF) 2 mm to infinity, Viewing Angle 0 to 90 Degrees, 90 Degrees, Field of View(FOV) 60 to 120 Degree, Probe / Insertion Tube Temperature -25 to 100 Degree C(air), 10 to 30 degree C(Water), Probe / Insertion Tube Diameter 6.2 mm. More details for IV9635X1N can be seen below.