Aomekie 7X50 Marine Binoculars for Adults, Military Binoculars Waterproof Fogproof with Compass Rangefinder BAK4 Prism Lens for Navigation,Boating,Fishing,Water Sports,Hunting (Army Blue) Hi-index BAK4 prism provides a bright, sharp image to offer you every little detail of an object. Green FMC anti-reflective coating reduces the reflected light in the objective lens and improves light transmission, image brightness and image sharpness. 50mm objective lens and 22mm eyepiece with a vision combination of HD wide-angle are more convenient to see distant objects without eyestrain and dizziness. Waterproof fogproof and night vision binocular : In low light conditions, such as at dusk and dawn, it can also provide the maximum brightness of the image. Nitrogen-filled waterproof and anti-fog design.Waterproof level up to IPX7(at 1 m depth for about 30 min) and float-able. Binoculars with rangefinder and compass: By specifying the ruler, you can directly calculate the distance of the object on the left eyepiece. With the illuminated compass you can c Identify direction. In low light condition, the ruler and the compass can be illuminated by the light. The Focusing System: With 5 diopter left and right diopter ring, You can adjust the distance for better viewing without glasses and for fine focusing. Exit pupil diameter: 6.8 mm Exit pupil distance: 22 mm(Long eye relief for eyeglass wearers). The eyecups can be folded easily so you can operate it with glasses. Binoculars binoculars with bag and strap, easy to carry. Durable rubber armored coating is comfortable to hold and rugged enough to stand up to any conditions. Ideal For Travel, Concerts Outdoor Activities, Bird Watching, Climbing, Hunting, Archery, Hiking, Camping, , Boating, Target Shooting, Water Sports. It is a perfect Birthday Christmas Halloween Thanksgiving Day Gifts