95% light transmission Nikon’s famous super-high resolution lenses 100% Waterproof/Fogproof/Shockproof One piece main body tube construction Fully multicoated lenses for unsurpassed light transmission/contrast Nitrogen filled and O-ring sealed Lifetime full warranty Finish: Matte Actual Magnification: 1.5x-4.5x Objective Diameter: 20mm Exit Pupil (mm): 13.3-4.4 Eye Relief (in): 3.7-3.5 FOV @ 50 yds (ft): 33.5-11.2 Tube Diameter: 1 in. Objective Tube (mm/in): 25.4/1 Eyepiece O.D. (mm): 38 Length (in): 10 Weight (oz): 9.3 Adjustment Gradation: 1/4 MOA Max Internal Adjustment: 120 MOA Parallax Setting (yds): 50