Athlon Optics 2-12x42 Heras SPR AAGR1 SFP, 1/4MOA, 1" Tube 2-12x magnification 42mm objective lens 1" aircraft-grade aluminum tube Precision zero stop Locking windage turret High-precision erector system 3.6" eye relief 10 yds to infinity side parallax adjustment 55.7-9.6 feet Field of view at 100 yards 1/4 MOA Click Value 25 MOA adjustment per rotation 70 MOA total elevation adjustment 70 MOA total windage adjustment 11.8" long 23.5 oz AAGR1 SFP (Second Focal Plane) Etched Glass Reticle Advanced Fully-Multicoated lenses One piece tube Waterproof Fogproof Shockproof Argon purged Lifetime warranty