Instructions & Attention: <p> Focusing: Look through scope within 3~4 inch distance from your eye to scope lens. You may adjust it by loosing lock ring, rotating eye bell and screwing the lock ring. <p> Mounting: Rotating the scope tube for a vertical or horizontal crosshair. While tighten all screws to fix scope firmly. <p> Bore sighting: Before you getting the target, you should make sure the vertical and horizontal crosshair should be in one point. Screw the upper and right hand wheel to adjusting the difference. <p> Adjusting magnification: Rotating the Power ring. <p> Adjusting distance: Rotating the distance ring. <p> Product Specifications: <p> Magnification:6~24X <p> Objective diameter:50mm/1.96inch <p> Eye Relief(mm):75.94~81.53 <p> Exit Pupil(mm):8.3~2.1 <p> Tube diameter:25.4mm/1 inch <p> Length:400mm/15.75inch <p> Field of view (m): 3.98~16.24 <p> Net Weight(lb):22.22 <p> Package List : <p> 1 x Scope <p> 2 x Ring Mount <p> 1 x Lens Cover <p> 1 x Cleaning Cloth <p> 1 x User Manual