The M210FN-WLS | 11220010 from Yateks is a Borescope with Depth of Field(DOF) 3 to 50 mm, Viewing Angle 120 Degree, Probe / Insertion Tube Temperature -20 to 50 Degree C, Operating Temperature -10 to 50 Degree C (Base unit), Probe / Insertion Tube Diameter 2.2 mm. More details for M210FN-WLS | 11220010 can be seen below.