The M-UV Series from Yateks is a Borescope with Depth of Field(DOF) 3 to 50 mm, Field of View(FOV) 80 Degree, Probe / Insertion Tube Temperature -20 to 70 Degree C, Operating Temperature -10 to 50 Degree C (Base unit), Probe / Insertion Tube Diameter 3.9 to 6 mm. More details for M-UV Series can be seen below.