Relations Feature A 25.4mm 1" Monotube A Multi-coated A 1/4 MOA Adjustment A Duplex Reticle Specification A Magnification: 4x A Objective Lens Dia: 32mm A Exit Pupil: 7.5mm A Tube Diameter: 25.4mm (one inch) A Length: 292mm / 11.5 inch A Weight (net): 280g / 11.0oz A Eye Relief: 80-70mm / 3.1-2.8 inch A Field of View (@100yds): 5.8Adeg A Optics Coating: Multi-coated A Reticle: duplex A Click Value: 1/4MOA A Elevation Range: 90MOA A Windage Rnage: 90MOA A Shock proof, water resistant and fog proof A High-quality aluminum alloy in a durable black matte finish A Feature 1/4" windage and elevation adjustments with audible clicks A Free fitting involved: 25.4mm weaver (default) or dovetail mount, cleaning cloth, lens cap etc