7x50 Waterproof Marine Binoculars for Adults with Rangefinder Compass BAK4 Prism FMC Lens for Birdwatching Hunting Boating Fishing Water Sports(Blue)

High-index BAK4 prism delivers a bright, sharp image to present every fine detail of an object. Green FMC anti-reflective coating minimizes reflected light in the objective lens and enhances light transmission, image brightness, and image clarity. The 50mm objective lens and 22mm eyepiece with wide-angle vision combination allow for convenient viewing of distant objects without causing eyestrain or dizziness. These are IPX7 waterproof and fogproof night vision binoculars. Please note: They cannot function in all dark environments. Only under low light conditions, such as at dusk and dawn, can they deliver maximum image brightness. They feature a nitrogen-filled waterproof and anti-fog construction. The waterproof rating is up to IPX7 (at 1 m depth for approximately 30 minutes) and they are buoyant. These military surplus-style binoculars incorporate a rangefinder and compass. By utilizing the ruler, you can directly calculate the distance of the object on the left eyepiece. With the illuminated compass, you can determine direction. In low light conditions, the ruler and compass can be illuminated. The focusing system features a ±5 diopter left and right diopter ring, enabling adjustment for better viewing without glasses and for precise focusing. Exit pupil diameter is 6.8 mm and exit pupil distance is 22 mm (long eye relief for eyeglass wearers). The eyecups can be folded down easily for use with glasses. The binoculars include a bag and strap for convenient carrying. The durable rubber armored coating is comfortable to grip and robust enough to withstand various conditions. They are suitable for travel, concerts, outdoor activities, bird watching, climbing, hunting, archery, hiking, camping, boating, target shooting, and water sports. They serve as an excellent gift for birthdays, Christmas, Halloween, and Thanksgiving