Carson 3D Series 6-18x50mm Riflescope for Hunting Shock proof, waterproof, fog proof with Eye relief at a comfortable 4 inches Fully Multi-Coated Lenses allow maximum light transmission Magnification - 6x-18x, lens size 50mm, weight 1.3lbs Field angle: 3.2-1.1 degrees, exit pupil diameter: 16.6-4.17mm prox. Field of view at 100m: 5.6m/1.68ft -1.9m/5.7ft