Ballistic archery reticle for accuracy out to 70+ yards; 1st Crosshair: 0-30 yards, 2nd Crosshair: 40-50 yards, 3rd Crosshair: 51-60 yards, 4th Crosshair: 61-70 yards. Tough, 1-inch tube made of aircraft-grade aluminum. Nitrogen filled to prevent the scope from fogging and shock tested to ensure it will withstand your outdoor adventures in all weather conditions; Waterproof and fog proof. Low-profile turrets are easily adjusted with your fingers. Adjustment rings are attractively machined for a non-slip gip, and the focus ring locks to ensure your sight picture remains clear.