... lights and 1.5M for night vision;f/2.8 Lens with 54°Viewable Angle8.Three useful optional accessories ... Dia.3.9mm,4.3mm,5.0mm,5.5mm,8.5mm,10mm camera head for observing even narrow spots2 ... LEDCamera: Lens: f/2.8 Lens Coverage: 54° Focal Distance: 3 ~ 8 cm Outer diameter: 10 mm IP 67 water resistantTube: ... Tube Length: 1000.0 ± 2.0 mm Diameter of hard tube: 6.8 mm Minimum Bending Radius: 4.5 cm Operating ...