Objective Lens Diameter: 17*23mm
Overall Light Transmission : 89%
Red Dot Size : 5MOA
Parallax: <3'
Adjustment Range : ±20.
Click Value : NO
Length*Height*Width : 49*37*28mm
Weight: 66g
Operation Temperature Range: -10°-60° 
Storage Temperature Range: -20°-70°
Battery : CR2032
Body : Paint oxidation