Description ADVANCED FULLY MULTI-COATED: Athlon advanced fully multicoated glass gives you better light transmission with optimum brightness and true color across the entire light spectrum.ARGON PURGED: High grade Argon gas has a low thermal conductivity compared to nitrogen gas, resulting in better fog proof capabilities.WATERPROOF: Regardless of how heavy the rain is coming down or an accidental drop in the water, this sealed and gas-purged optic will remain waterproof.AIRCRAFT GRADE ALUMINUM TUBE ILLUMINATED RETICLE ETCHED GLASS RETICLE FOG PROOF SHOCKPROOF ONE PIECE TUBE CONSTRUCTIONPower: 2-12X Obj. Lens: 42mm Tube Size: 1mm Turrets: Capped Eye Relief: 3.6 in. FoV at 100Y: 55.7-9.6 ft Click Value: 0.25 MOA Adjustment Per Rotation: 15 MOA Total Elevation Adjustment: 80 MOA Total Windage Adjustment: 80 MOA Parallax Adjustment: Side Focus 10yds-oo Purging Material: Argon Weight: 19.8 oz.