Magnification: 3-9x - Objective: 50mm - Field of View: 34.1-14.1 ft @ 100 yds - Eye Relief: 4.2-3.6 - Tube Diameter: 1 - Length: 12.3 - Weight: 13.3 oz - Finish: Black - Reticle: Heavy Duplex - Adj Size: .25 MOA @ 100 yds - Quantum Optical System incorporates Index Matched Lens coatings with lead-free edge blackened lenses. DiamondCoat lens coatings on exterior lens surfaces. Up to 94 percent light transmission. Externally threaded fast-focus eyepiece. Finger-adjustable 1/4-MOA click windage and elevation adjustments. Advanced power selector design incorporates a tactile power indicator and easy-to-read numbers. Second generation waterproofing with Argon/Krypton gas blend.