Check it out here: https://www.amazon.com/DISCOVERYOPTIC...
Or https://discoveryopt.com/products/117

Objective Lens Diameter: 40 mm
Magnification: 3 9 x
Tube Diameter: 1 in
Reticle Focal Plane: Second Focal Plane (SFP)
Exit Pupil: 4.3 13.1 mm
Illumination Color: None
Finish: Matte
Field of View, Linear: 13.3m 4.5m/100 yds
Eye Relief: 3.3 2.8 in
Color: Black
Weight: 12.3 oz(350g)
Adjustment Click Value: 1/4 MOA
Length: 12.1 in(307mm)
Adjustment Type: MOA
Fabric/Material: Aircraft Grade Aluminum
Focus Range: 100 yds
Lens Material: Glass
Water Resistance Level: Waterproof
Shockproof: Yes
Fogproof: Yes
Package Type: Box
Magnification Type: Variable
W/E Travel at 100 Yds: 70/70 MOA