100% Waterproof/Fogproof Compact and lightweight Aspherical eyepiece lenses provide crisp, distortion-free field of view Long eye-relief for eyeglass wearers Rubber armored, polycarbonate body Eco-glass lenses and prisms for high performance and weight-savings Twist-up eyecups for easy viewing Magnification x: 8 Objective Diameter (mm): 25 Angular Field of view (Real): 6.3 Angular Field of view (Apparent): 50.0 FOV at 1000 yds. (ft.): 330 Close Focus Distance (ft.): 9.1 Exit Pupil (mm): 3.1 Relative Brightness: 9.8 Eye Relief (mm): 15.5 Size (L&W) Inches: 3.9x4.5 Size (L&W) MM: 100x116 Weight (oz/g): 12.5/355