The VJ-3 2.2mm from ViewTech Borescopes is a Borescope with Depth of Field(DOF) 3 to 50 mm, Field of View(FOV) 120 Degree±10 Degree, Probe / Insertion Tube Temperature -10 to 50 Degree C, Operating Temperature -20 to 50 Degree C(Base Unit), Probe / Insertion Tube Diameter 2.2 mm. More details for VJ-3 2.2mm can be seen below.