The IV9435G 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) 80 to 120 Degree, Probe / Insertion Tube Temperature -25 to 100 Degree C(air), 10 to 30 degree C(Water), Probe / Insertion Tube Diameter 4 mm. More details for IV9435G can be seen below.